Add test case for server redirecting twice.
Fix pool manager urlopen() redirect at most once issue.
CHANGES version bump.
Merge pull request #151 from echaozh/pm-redirect-twice

PoolManager urlopen() redirect at most once (issue #149)
CHANGES.
CHANGES.
Merge branch 'master' of github.com:shazow/urllib3
Merge branch 'master' into release
CHANGES again. Messiest release merging ever.