[commit: ghc] wip/T8545-ghc-7.8's head updated: Convert all sub-repos into proper submodules (re #8545) (c11ad8d)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

Branch 'wip/T8545-ghc-7.8' now includes:

     7461c98 Add missing kind-check for tcEqType on forall-types
     8f2d7eb relnotes: GND is not -XSafe compatible.
     4b1814f Implicit parameters should not be allowed in class and instance declarations
     ce2c547 For equalities with incompatible kinds, new IrredCan goes in the inert set, not work list
     09062bd Flattener preserves synonyms, rewriteEvidence can drop buggy "optimisation"
     65aa60b Implement ordering comparisons for type-level naturals and symbols.
     fc5aa5d Use the correct callClobberedRegs on Windows/x64 (#8834)
     1eee1ca rts: remove unused functions, fix validate on OS X
     7d2dbfc Temporarily fight off build bogons on OS X
     d0768db Bump haddock.base test-case resource limits due to haddock-2.14.2
     63c0b7b Fix #8958.
     177b97a windows: Fix #8870
     9cd07fc Make sure that polykinded Typeable is defaultable (Trac #8931)
     2689f20 Test Trac #8931
     8019d67 Fix copy/paste error (#8937)
     69fa6a6 Fix desguaring of bang patterns (Trac #8952)
     e08adf9 Revert "Revert ad15c2, which causes Windows seg-faults (Trac #8834)"
     854f731 Require PatternSynonyms language flag when encountering a use of pattern synonym (#8961)
     230d037 T8958: fix stderr
     6ecb89f users_guide: note -XPatternSynonyms is required for use sites
     48bf40d Update ANNOUNCE for GHC 7.8.1
     762e083 Set VERSION=7.8.1, RELEASE=YES
     c11ad8d Convert all sub-repos into proper submodules (re #8545)