Log Message:
Pull in devel/binutils if '${AS} --version' reports to be less than 2.13.2.1,
and ensure that the built compiler uses it. This fixes a problem reported by
abs compiling perl, among other things. Apparently, gcc-3.3 triggers a bug in
gas:

    http://gcc.gnu.org/bugzilla/show_bug.cgi?id=10877

Bump ${PKGREVISION}.