dev-lang/ghc-7.10: a new experimental ebuild (does not yet with our eclasses)

Signed-off-by: Sergei Trofimovich <siarheit@google.com>
dev-lang/ghc: binaries for ppc and ppc64

Signed-off-by: Sergei Trofimovich <siarheit@google.com>
xmonad-9999 now has dep on setlocale