dev-haskell/json: bump up to 0.9

Package-Manager: portage-2.2.14
www-apps/gitit: allow json-0.9

Signed-off-by: Sergei Trofimovich <siarheit@google.com>
dev-haskell/hasktags: allow json-0.9

Signed-off-by: Sergei Trofimovich <siarheit@google.com>
dev-lang/ghc: use modern integer-gmp2

Signed-off-by: Sergei Trofimovich <siarheit@google.com>
dev-lang/ghc: fix bootstrapping by ghc-7.10

Signed-off-by: Sergei Trofimovich <siarheit@google.com>
eclass/ghc-package.eclass: merge 'ghc-setup-pkg' / 'ghc-install-pkg'

They are always called one after another.

Signed-off-by: Sergei Trofimovich <siarheit@google.com>