This test relies on being able to set a custom QLibraryInfo::PrefixPath
for the duration of the test. However, the test code neglected to
account for the following behavior on mac (from "Using qt.conf"
documentation):
On Mac OS X, the Prefix is relative to the Contents in the application
bundle.
Change-Id: Ie9b6d5ebfe8af7d7f332e827069b60a830d6c6f2
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>