Loosen the rules for instance declarations (Part 2)
authorsimonpj@microsoft.com <unknown>
Thu, 9 Feb 2006 10:21:29 +0000 (10:21 +0000)
committersimonpj@microsoft.com <unknown>
Thu, 9 Feb 2006 10:21:29 +0000 (10:21 +0000)
commit59c9c122f942f348008d4ed8ba088286343d63d3
treea3470ea216c671e9c1399e1fc12600766a272042
parent1cdafe99abae1628f34ca8c064e3a8c0fcdbd079
Loosen the rules for instance declarations (Part 2)

Tidying up to Ross's  patch, plus adding documenation for it.
ghc/compiler/typecheck/TcInstDcls.lhs
ghc/compiler/typecheck/TcMType.lhs
ghc/docs/users_guide/glasgow_exts.xml