dev-haskell/attobencode: allow QuickCheck-2.6

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-haskell/diagrams-contrib: allow QuickCheck-2.6

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
xmonad needs (fails w/o) libXinerama even w/o xinerama use flag