dev-vcs/darcs: downgrade KEYWORDS down to ~all.

Package-Manager: portage-2.2.8_p51
sync keywords from gx86

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-haskell/x11: sync lower bound back from gx86

Package-Manager: portage-2.2.8_p51