Preparations for release of GF 3.3

+ Changing version numbers and dates here and there.
+ Simplify build-binary-dist.sh since pgf-http need not be built anymore.
+ Use--gf-lib-path to make the sample grammars for minibar compile even if GF
  is not installed.

gf.cabal

@@ -1,5 +1,5 @@
 name: gf
-version: 3.2.10-darcs
+version: 3.3
 
 cabal-version: >= 1.8
 build-type: Custom