Clean-up Makefile.
Always include headers and try to build C extension.
Merge pull request #42 from AlekSi/setup.py-fixes

Setup.py fixes: always include headers and try to build C extension
v0.4
Merge remote-tracking branch 'chergert/master'

Conflicts:
	Makefile
	setup.py
import Binary from bson instead of pymongo
added pymongo dependency
fixed Makefile
Merge https://github.com/chergert/txmongo

Conflicts:
	txmongo/_gridfs/grid_file.py
Merge https://github.com/oubiwann/txmongo

Conflicts:
	setup.py