Handle any MongoDB connection option inline
Show warning about pickle being deprecated in 3.2
Fixes #1542
flakes
Multi should support both -f and --logfile.  Closes #1541
Beat: Fixes crash when relative option enabled.  Closes #1538
Merge branch '3.0'
Fixes repr of RetryTaskError
funtests: Fixes main name
Merge branch '3.0'

Conflicts:
	celery/exceptions.py
	funtests/benchmarks/bench_worker.py
Fixes tests
Worker: Now using separate connection to publish events
Be careful accessing deep attributes
Eventlet: Fixes shutdown race condition causing "second read" error
Adds -g green option to stresstest suite for eventlet/gevent tests
Eventlet/gevent/solo/threads now properly handles BaseException in tasks
Adds Celery.on_configure callback
celeryd_init signal now has new "options" argument for command-line options
user_options["preload"] and new signals.user_preload_options can be used to add new global options
Stresstests: Adds more tests for "green" suite