[autotest] tst_qdeclarativelanguage fails on OSX 10.8

This test is always failing on macx-clang_developer-build_OSX_10.8 stage.
See http://testresults.qt-project.org/ci//Qt5_stable_Integration/build_00391/macx-clang_developer-build_OSX_10.8/log.txt.gz

FAIL! : tst_qdeclarativelanguage::errors(incorrectCase) Compared lists differ at index 1.
Actual (expected): '2D 31 3A 2D 31 3A 46 69 6C 65 20 6E 61 6D 65 20 63 61 73 65 20 6D 69 73 6D 61 74 63 68'
Expected (actual): '2D 31 3A 2D 31 3A 46 69 6C 65 20 6E 6F 74 20 66 6F 75 6E 64'
Loc: [tst_qdeclarativelanguage.cpp(442)]
FAIL! : tst_qdeclarativelanguage::importIncorrectCase() Compared values are not the same
Actual (errors.at(0).description()): File not found
Expected (expectedError): File name case mismatch
Loc: [tst_qdeclarativelanguage.cpp(1854)]