tests are not executed for macx-clang_developer-build_OSX_10.8

testplan generation failed; make -s -j4 check TESTRUNNER=perl /work/build/_qtqa_latest/scripts/qt/../generic/testplanner.pl --make make --makefile $(CURDIR)/$(firstword $(MAKEFILE_LIST)) --output /work/build/qt/qtbase/tests/auto/testplan.txt --testcase -- TESTARGS=-silent -o testresults.xml,xml -o -,txt exited with status 512 (exit code 2) at /work/build/_qtqa_latest/scripts/qt/../generic/testplanner.pl line 604.
perl /work/build/_qtqa_latest/scripts/qt/../generic/testplanner.pl --input . --output testplan.txt --make make -- -silent -o testresults.xml,xml -o -,txt exited with status 512 at _qtqa_latest/scripts/qt/qtmod_test.pl line 1372.
	QtQA::ModuleTest::__ANON__() called at _qtqa_latest/scripts/qt/qtmod_test.pl line 1410
	eval {...} called at _qtqa_latest/scripts/qt/qtmod_test.pl line 1410
	QtQA::ModuleTest::_run_autotests_impl('QtQA::ModuleTest=HASH(0x7fae18acb280)', 'tests_dir', '/work/build/qt/qtbase/tests/auto', 'insignificant_option', 'qt.tests.insignificant', 'do_compile', 0) called at _qtqa_latest/scripts/qt/qtmod_test.pl line 1227
	QtQA::ModuleTest::run_autotests('QtQA::ModuleTest=HASH(0x7fae18acb280)') called at _qtqa_latest/scripts/qt/qtmod_test.pl line 302
	QtQA::ModuleTest::run('QtQA::ModuleTest=HASH(0x7fae18acb280)') called at _qtqa_latest/scripts/qt/qtmod_test.pl line 1467
	QtQA::ModuleTest::main('QtQA::ModuleTest') called at _qtqa_latest/scripts/qt/qtmod_test.pl line 1472

This is a warning, not an error, because the `qt.tests.insignificant' option was used.  This means the tests are currently permitted to fail at _qtqa_latest/scripts/qt/qtmod_test.pl line 1412.