webkit does some unholy tricks with the ordering of qmake and make
invocations, so it does not work with qmake -r. to make it still
possible to integrate it into the qt5 aggregator project, give it a
chance to "break out" from the recursion.
Change-Id: I926836e44c0e0790cdd90e6b0c8f766dccc33c4d
Reviewed-by: Joerg Bornemann <joerg.bornemann@nokia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>