Mac offline installer: Installing to /opt appears to succeed but results in a broken installation

This has also been reported at:

http://qt-project.org/forums/viewthread/34532/

When I try to run even the simplest program, e.g. a QCoreApplication template,

I get:

cd /; /opt/Qt5.2.0/Qt\ Creator.app/Contents/MacOS/../Resources/qtcreator_process_stub run /var/folders/hp/qxqj0lld5rv3sfcn9kk1d5fc0000gn/T/QtCreator.a58755/stub-socket Press\ \<RETURN\>\ to\ close\ this\ window... /Users/brown/build-commandline-Desktop_Qt_5_2_0_clang_64bit-Release /var/folders/hp/qxqj0lld5rv3sfcn9kk1d5fc0000gn/T/QtCreator.z58755 /Users/brown/build-commandline-Desktop_Qt_5_2_0_clang_64bit-Release/commandline
brown@air ~> cd /; /opt/Qt5.2.0/Qt\ Creator.app/Contents/MacOS/../Resources/qtcreator_process_stub run /var/folders/hp/qxqj0lld5rv3sfcn9kk1d5fc0000gn/T/QtCreator.a58755/stub-socket Press\ \<RETURN\>\ to\ close\ this\ window... /Users/brown/build-commandline-Desktop_Qt_5_2_0_clang_64bit-Release /var/folders/hp/qxqj0lld5rv3sfcn9kk1d5fc0000gn/T/QtCreator.z58755 /Users/brown/build-commandline-Desktop_Qt_5_2_0_clang_64bit-Release/commandline
dyld: Library not loaded: /work/build/_____________________________PADDING_____________________________/lib/QtCore.framework/Versions/5/QtCore
Referenced from: /Users/brown/build-commandline-Desktop_Qt_5_2_0_clang_64bit-Release/commandline
Reason: image not found
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