Cabal revisions of GLUT-2.0

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

 name:		GLUT version:	2.0+x-revision: 1 license:	BSD3 license-file:	LICENSE maintainer:	Sven Panne <sven.panne@aedion.de> include-dirs:	include install-includes: HsGLUT.h c-sources:	cbits/HsGLUT.c-build-depends:	base, OpenGL+build-depends:	base <3, OpenGL <2.3 extensions:	CPP, ForeignFunctionInterface