Cabal revisions of HUnit-1.2.0.3

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

 name:           HUnit version:        1.2.0.3+x-revision: 1 license:        BSD3 license-file:   LICENSE author:         Dean Herington flag base4  library-    build-depends: base <5+    build-depends: base <4.7     if flag(base4)       build-depends: base >=4       cpp-options: -DBASE4