Works-in-progress on handling Python 3 standard library reorganizations
Work on abstracting out stdlib differences
Rename from unweldly stdlibcompatibility to arcrest.compat

--HG--
rename : arcrest/stdlibcompatibility.py => arcrest/compat.py
Revert some changes to make way for better 2/3 updates
Cleaner handling for stdlib refactors in Python 3.X
Fix for missing cookiejar import