dev-lang/ghc-7.6.2: fix USE=-gmp build failure (missing divInteger function)

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-haskell/containers-unicode-symbols: new package

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-lang/ghc: USE=-shared should also disable DYNAMIC_GHC_PROGRAMS

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