Add missing pat_equal case.
TODO list
Merge branch 'master' of github.com:jkarni/th-alpha

Conflicts:
	src/Language/Haskell/TH/Alpha.hs
Cleaning up AlphaEq
Clauses, Types, etc.

        And stop bothering with fancy classes.
Packaging.

        Better haddocks and more sensible exportable functions.
README and updated cabal.
rename areExpEq to areExpAEq
rename areExpEq to areExpAEq
Merge branch 'master' of github.com:jkarni/th-alpha
Refactoring.

        Refactoring to use the LookupST state monad instead of passing extra
        arguments. Broke the tests, so I'll have to come back to it.
Merge branch 'master' of github.com:jkarni/th-alpha

Conflicts:
	src/Language/Haskell/TH/Alpha.hs
	th-alpha.cabal