Ported all ebuilds to EAPI=3, bump to Dev Tools 3.2.1, 5646.1 as 5647 (hack), update...

Ported all ebuilds to EAPI=3, bump to Dev Tools 3.2.1, 5646.1 as 5647 (hack), update gfortran support, use version 4.2.4 for latest ebuild since ATTR seems to be doing that too, hopefully for a good reason.  Put back stdc++-v3 into the gcc tree so we don't have to configure/make twice (necessary even for EAPI=2+).  Sed Gentoo version into version string, so our compilers are identifyable, let bugs url point to our bugzilla.
Package-Manager: portage-2.2.00.15753-prefix/cvs/Darwin powerpc