Cabal revisions of fgl-5.3

Hackage metadata revisions edit the .cabal file after upload; each diff below is one revision.

 name:		fgl version:	5.3+x-revision: 1 license:	BSD3 license-file:	LICENSE maintainer:	Martin Erwig 	Data.Graph.Inductive.Query.SP, 	Data.Graph.Inductive.Query.TransClos, 	Data.Graph.Inductive-build-depends:	base, mtl+build-depends:	base < 3, mtl extensions: MultiParamTypeClasses, OverlappingInstances