Qt3D doesn't build on OSX 10.8

This is currently circumvented by forcing success in the CI system for the following build configs:

macx-clang_developer-build_OSX_10.8
macx-clang_no-framework_OSX_10.8

This has follow on effect as QtLocation cannot build either in those configurations

The build error:

make[3]: *** [.obj/release-shared/Importer.o] Error 1
make[3]: *** Waiting for unfinished jobs....
In file included from ../../3rdparty/assimp/code/LWSLoader.cpp:46:
In file included from ../../3rdparty/assimp/code/AssimpPCH.h:106:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:212:9: error: field has incomplete type 'Assimp::LWS::Element'
Tp __value;
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:1889:54: note: in instantiation of template class 'std::_1::_list_node<Assimp::LWS::Element, void *>' requested here
decltype(_VSTD::move(_Tp(_VSTD::declval<_Args>()...)), true_type())
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:1890:1: note: while substituting deduced template arguments into function template '__is_constructible_test' [with _Tp = std::__1::allocator<std::__1::__list_node<Assimp::LWS::Element, void *>>, _Args = <no value>]
__is_constructible_test(_Tp&&, _Args&& ...);
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:1949:14: note: in instantiation of template class 'std::_1::is_constructible<false, std::1::allocator<std::1::list_node<Assimp::LWS::Element, void *>>, std::1::allocator<std::1::_list_node<Assimp::LWS::Element, void *>> &&>' requested here
: public __is_constructible<is_scalar<_Tp>::value || is_reference<_Tp>::value,
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:1975:14: note: in instantiation of template class 'std::_1::is_constructible_void_check<false, std::1::allocator<std::1::list_node<Assimp::LWS::Element, void *>>, std::1::allocator<std::1::_list_node<Assimp::LWS::Element, void *>> &&>' requested here
: public _is_constructible_void_check<_contains_void<_Tp, _Args...>::value
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:2455:34: note: in instantiation of template class 'std::_1::is_constructible<std::1::allocator<std::1::list_node<Assimp::LWS::Element, void *>>, std::1::allocator<std::1::_list_node<Assimp::LWS::Element, void *>> &&>' requested here
: __is_nothrow_constructible<is_constructible<_Tp, _Args...>::value, _Tp, _Args...>
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:2590:14: note: (skipping 1 context in backtrace; use -ftemplate-backtrace-limit=0 to see all)
: public is_nothrow_constructible<_Tp, typename add_rvalue_reference<_Tp>::type>
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/memory:2219:20: note: in instantiation of template class 'std::_1::is_nothrow_move_constructible<std::1::allocator<std::1::_list_node<Assimp::LWS::Element, void *>>>' requested here
is_nothrow_move_constructible<_T2>::value)
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/_config:253:34: note: expanded from macro '_NOEXCEPT'

1. define NOEXCEPT noexcept
   ^
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/memory:2386:15: note: in instantiation of template class 'std::_1::libcpp_compressed_pair_imp<unsigned long, std::1::allocator<std::1::_list_node<Assimp::LWS::Element, void *>>, 2>' requested here
   : private __libcpp_compressed_pair_imp<_T1, _T2>
   ^
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:513:52: note: in instantiation of template class 'std::_1::compressed_pair<unsigned long, std::1::allocator<std::1::_list_node<Assimp::LWS::Element, void *>>>' requested here
   _compressed_pair<size_type, __node_allocator> __size_alloc;
   ^
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:770:15: note: in instantiation of template class 'std::_1::list_imp<Assimp::LWS::Element, std::_1::allocator<Assimp::LWS::Element>>' requested here
   : private __list_imp<_Tp, _Alloc>
   ^
   ../../3rdparty/assimp/code/LWSLoader.h:67:24: note: in instantiation of template class 'std::_1::list<Assimp::LWS::Element, std::_1::allocator<Assimp::LWS::Element>>' requested here
   std::list<Element> children;
   ^
   ../../3rdparty/assimp/code/LWSLoader.h:59:7: note: definition of 'Assimp::LWS::Element' is not complete until the closing '}'
   class Element
   ^
   In file included from ../../3rdparty/assimp/code/LWSLoader.cpp:46:
   In file included from ../../3rdparty/assimp/code/AssimpPCH.h:106:
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:203:19: error: static_cast from 'std::_1::list_node_base<Assimp::LWS::Element, void *> *' to 'pointer' (aka 'std::1::_list_node<Assimp::LWS::Element, void *> *') is not allowed
   : _prev(static_cast<pointer>(this)),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:529:5: note: in instantiation of member function 'std::_1::list_node_base<Assimp::LWS::Element, void *>::_list_node_base' requested here
   __list_imp()
   ^
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:795:5: note: in instantiation of member function 'std::_1::list_imp<Assimp::LWS::Element, std::1::allocator<Assimp::LWS::Element> >::_list_imp' requested here
   list()
   ^
   ../../3rdparty/assimp/code/LWSLoader.h:62:5: note: in instantiation of member function 'std::_1::list<Assimp::LWS::Element, std::_1::allocator<Assimp::LWS::Element> >::list' requested here
   Element()
   ^
   In file included from ../../3rdparty/assimp/code/LWSLoader.cpp:46:
   In file included from ../../3rdparty/assimp/code/AssimpPCH.h:106:
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:204:19: error: static_cast from 'std::_1::list_node_base<Assimp::LWS::Element, void *> *' to 'pointer' (aka 'std::1::_list_node<Assimp::LWS::Element, void *> *') is not allowed
   _next(static_cast<pointer>(this))
   ^~~~~~~~~~~~~~~~~~~~~~~~~~
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:678:30: error: static_cast from '_node_base *' (aka 'list_node_base<value_type, __void_pointer> *') to 'node_pointer' (aka 'std::1::_list_node<Assimp::LWS::Element, void *> *') is not allowed
   _node_pointer __l = static_cast<node_pointer>(&end);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:664:5: note: in instantiation of member function 'std::_1::list_imp<Assimp::LWS::Element, std::_1::allocator<Assimp::LWS::Element> >::clear' requested here
   clear();
   ^
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:769:23: note: in instantiation of member function 'std::_1::list_imp<Assimp::LWS::Element, std::1::allocator<Assimp::LWS::Element> >::~_list_imp' requested here
   class _LIBCPP_VISIBLE list
   ^
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:1480:18: error: non-const lvalue reference to type '_node' (aka 'list_node<value_type, __void_pointer>') cannot bind to a value of unrelated type 'node_base' (aka '_list_node_base<value_type, __void_pointer>')
   _link_nodes(static_cast<node&>(base::end), *_hold, *_hold);
   ^ ~~~~~~~~~~~~
   ../../3rdparty/assimp/code/LWSLoader.cpp:79:18: note: in instantiation of member function 'std::_1::list<Assimp::LWS::Element, std::_1::allocator<Assimp::LWS::Element> >::push_back' requested here
   children.push_back(Element());
   ^
   In file included from ../../3rdparty/assimp/code/LWSLoader.cpp:46:
   In file included from ../../3rdparty/assimp/code/AssimpPCH.h:106:
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:570:31: error: static_cast from 'const _node_base *' (aka 'const __list_node_base<value_type, __void_pointer> *') to 'node_const_pointer' (aka 'const std::1::_list_node<Assimp::LWS::Element, void *> *') is not allowed
   return const_iterator(static_cast<_node_const_pointer>(&end));
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:868:59: note: in instantiation of member function 'std::_1::list_imp<Assimp::LWS::Element, std::_1::allocator<Assimp::LWS::Element> >::end' requested here
   const_iterator end() const _NOEXCEPT {return base::end();}

   ^
   ../../3rdparty/assimp/code/LWSLoader.cpp:186:35: note: in instantiation of member function 'std::_1::list<Assimp::LWS::Element, std::_1::allocator<Assimp::LWS::Element> >::end' requested here
   for (++it; it != dad.children.end(); ++it) {
   ^
   In file included from ../../3rdparty/assimp/code/LWSLoader.cpp:46:
   In file included from ../../3rdparty/assimp/code/AssimpPCH.h:106:
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:561:25: error: static_cast from '_node_base *' (aka 'list_node_base<value_type, __void_pointer> *') to 'node_pointer' (aka 'std::1::_list_node<Assimp::LWS::Element, void *> *') is not allowed
   return iterator(static_cast<_node_pointer>(&end));
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/list:866:59: note: in instantiation of member function 'std::_1::list_imp<Assimp::LWS::Element, std::_1::allocator<Assimp::LWS::Element> >::end' requested here
   iterator end() _NOEXCEPT

   {return base::end();}

   ^
   ../../3rdparty/assimp/code/LWSLoader.cpp:518:32: note: in instantiation of member function 'std::_1::list<Assimp::LWS::Element, std::_1::allocator<Assimp::LWS::Element> >::end' requested here
   for (; it != root.children.end(); ++it) {
   ^
   7 errors generated.
   make[3]: *** [.obj/release-shared/LWSLoader.o] Error 1
   make[2]: *** [sub-threed-make_first-ordered] Error 2
   make[1]: *** [sub-src-make_first] Error 2
   make: *** [module-qt3d] Error 2