use ghc 7.8.4

Strictly 2014.2.0.0 uses 7.8.3 but there is no HP release
yet for 7.8.4, which is just a bugfix release anyway.
No changes needed to the haskell-platform source.

haskell-platform.spec

@@ -1,6 +1,6 @@
 # https://fedoraproject.org/wiki/Packaging:Haskell
 
-%global ghc_compiler_version 7.8.3
+%global ghc_compiler_version 7.8.4
 %global alex_version 3.1.3
 %global cabal_install_version 1.18.0.5
 %global happy_version 1.19.4
@@ -43,7 +43,7 @@ Version:        2014.2.0.0
 # - release can only be reset if all library versions get bumped simultaneously
 #   (eg for a major release)
 # - minor release numbers should be incremented monotonically
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Standard Haskell distribution
 
 Group:          Development/Tools
@@ -246,6 +246,9 @@ rm %{buildroot}/%{_docdir}/ghc-%{name}*/LICENSE
 
 
 %changelog
+* Sat Jan 24 2015 Jens Petersen <petersen@fedoraproject.org> - 2014.2.0.0-2
+- using ghc-7.8.4
+
 * Wed Aug 20 2014 Jens Petersen <petersen@redhat.com> - 2014.2.0.0-1
 - update to haskell-platform-2014.2
 - ghc-7.8.3 ships xhtml