https://github.com/celery/celery/issues/2357
Update CONTRIBUTORS.txt
Removes out of date documentation for CELERYD_FORCE_EXECV (Issue #2020)
make configcheck passes
Prefork: Use poll() to avoid limitations of select() (Issue #2373)
Tests passing
Typo fix
Rollover changelog
Merge pull request #2375 from dnaeon/typo-fixes

Typo fix
Merge pull request #2364 from tfrench/patch-1

Update CONTRIBUTORS.txt
MongoDB: Pickle url with backend.  Closes #2347
MongoDB: Fixes expires
Merge pull request #2358 from mpermana/master

https://github.com/celery/celery/issues/2357
Optimization for #2358
Update CONTRIBUTORS.txt
Merge pull request #2378 from mpermana/patch-1

Update CONTRIBUTORS.txt
Removes unused method state.compare
Force ScheduleEntry to be orderable.  Closes #2295
Merge branch 'master' of github.com:celery/celery
some more for whatsnew3.2