[commit: ghc] wip/gadtpm's head updated: Major Overhaul of Pattern Match Checking (Fixes #595) (5d13d6b)

[git at git.haskell.org]

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

Branch 'wip/gadtpm' now includes:

     218fdf9 Make the order of fixities in the iface file deterministic
     741f837 Implement more deterministic operations and document them
     52b02e6 Comments only (isIrrefutablePat)
     b564731 Comments (TcSMonad)
     d00cdf2 Revert "ghci: Add support for prompt functions"
     1caff20 StgSyn: Remove unused SRT constructor
     c75948b Move Stg-specific code from DynFlags to SimplStg
     d4d54b4 Remove *.xml from gitignore
     a12e47b Avoid panic due to partial ieName
     8cba907 Create empty dump files when there was nothing to dump
     0d1a2d2 ErrUtils: Spruce up Haddocks
     e7929ba Update bytestring submodule
     5d13d6b Major Overhaul of Pattern Match Checking (Fixes #595)