Enable Qt4 tests

Enable Qt4 tests
ticket:207
To fix the problem generating the moc_Test files I stopped trying
to fake the .hpp file for moc, and renamed the qui/test/Test*.cpp files to
.hpp and added a very small .cpp file which included the header and
called the QTEST_MAIN or QTEST_APPLESS_MAIN macro.
APPLESS will work even if I don't have a working X server on linux, but
some parts of Qt require that the gApp be constructed.