dev-haskell/ihaskell: bump up to 0.3.0.2

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-haskell/vector: disable SpecConstr for GHCi-less arches (bug #482960)

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