improves docstring
Typo in /etc/init.d/celery usage help
Retry sending task-sent event if connection failed.
Disable execv by default
Configure multiprocessing with loglevel ERROR by default (if MP_LOG envvar not set)
events dumper (-d) now retries on connection failure
flakes
Do not use future_builtins
Tests passing
Now depends on Kombu 2.5.5
Updates Changelog for 3.0.14
Cosmetics
Refactores event states to allow pickling

Conflicts:
	celery/events/state.py
Fixes docstring
LRUCache is pickleable
Makes events.state.State pickleable
Merge branch '3.0' of github.com:celery/celery into 3.0
dummy -> memory for CELERY_CACHE_BACKEND
Sets heartbeat checkrate to 3 by default
Now depends on billiard 2.7.3.20