dev-lang/ghc: disable SplitObj for crosscompiler

Build system does not understand I need real UNREG build
and tries to run missing mangler.

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
dev-haskell/hdbc-odbc: lowercase patch

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