Revert "Trying things without gcc47 - will revert if I can't make gcc42 work"

This reverts commit 7fb54ef4b92468f60e6e96ce740f065e968c1fcc.

We are not ready to remove gcc47 yet.  net/samba41 and www/aria2 pull
it in via BUILD_DEPENDS.  We need this to cut down on build times
so that we don't do a full gcc bootstrap, and don't build gcc-java.