patch applied (ghc): Allow instance heads to use infix syntax

[Simon Peyton Jones]

Tue Dec 22 08:23:25 PST 2009  simonpj at microsoft.com
  * Allow instance heads to use infix syntax
  Ignore-this: 54da2aa4208ee6757a80fa916c4afd6c
  
    class C a b
    instance Int `C` Bool
  
  This was accidentally disallowed before.

    M ./compiler/parser/RdrHsSyn.lhs -2 +4

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20091222162325-1287e-6597e25035acf4857d092dcb0bb0293d590e8409.gz