Exclude httplib_compat.py from coverage.
Exclude httplib_compat.py from coverage.

We're not using it at this time, so it necessarily has 0% coverage.

masaori335/hyper,masaori335/hyper,irvind/hyper,irvind/hyper,lawnmowerlatte/hyper,lawnmowerlatte/hyper,plucury/hyper,plucury/hyper,jdecuyper/hyper,Lukasa/hyper,fredthomsen/hyper,jdecuyper/hyper,fredthomsen/hyper,Lukasa/hyper