dev-haskell/fixed-vector: bump up to 0.5.1.2

Signed-off-by: Alexander Vershilov <alexander.vershilov@gmail.com>
dev-haskell/http: allow ghc 7.8
dev-haskell/http: add live version
dev-haskell/language-c: add live version
dev-haskell/hashed-storage: allow live version