dev-haskell/th-desugar: fix hspec build

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-haskell/hscurses: workaround build failure on ghc-7.8

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Merge branch 'master' of github.com:gentoo-haskell/gentoo-haskell
dev-haskell/aeson: refine depend on scientific (gentoo bug #530088)

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