The moc tool is not aware of all defines (particularly those that are
compiler builtins) and does not correctly evaluate others that depend
on compiler builtins, such as Q_OS_FOO.
This commit reverts parts of the following commits, but is not a
complete fix as there were many instances of this problem in the tests
prior to those commits:
924d810dbd8aaff67510338d3f1197a55034062b253497b7447cfad460c59d2ff58f360cf6baa2d6
Change-Id: I947d797fe3ec76139ba1b55561cea569895662c5
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>