portage: enable '--complete-graph' by default

Especially useful to pull the packages in proper order.

The common problem is portage treating broken packages
as installed thus when we try to reemerge all broken stuff
we get completely random order.

'--complete-graph' helps in restoring the sanity.

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
haskell-updater.cabal: tag 1.2.0.9

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>