i.e. "don't add gnomevfs requires to epm created rpms if GNOMEVFS is disabled"

seeing as setup_native/source/packinfo/packinfo_office.txt references
find-requires-gnome.sh and doesn't have conditional support revert the split
and put the the conditional into find-requires-gnome.sh

Change-Id: I34bd37c4fd252f2175ff055024293dea946b4881