Add a (temporary) patch wine-devel/files/patch-libs-wine-mmap.c to
address an issue that creeped in upstream among the fixes for FreeBSD
that made it into Wine 5.9. [1]

Remove files/patch-tools-winegcc which temporarily reverted the upstream
change that triggered a flurry of breakage and improvements for FreeBSD.

Bump PORTREVISION since both changes are substantial.