added "fake" upgrade command
Only allow "upgrade" command on specific watchers (DEVOPS-8)
If 2 process already exist don't let upgrade add +1 (DEVOPS-10)
If a process is not running (ZOMBIE OR DEAD) don't increment by 1 during upgrade (DEVOPS-9)
Fixed add with config when using upgradable and std*_stream
parse env before diffing config on reloadconfig
stream: remove redirection on fd exception
Improved status command to show more info about running processes
Removed bytes2human from memory stats
Show more possible errors in status output
get tests working with CloudFlare changes.  Found one bug in status command and in add watcher.
add support to circus to reload the current config without restarting watchers (DEVOPS-58)

Conflicts:
	circus/arbiter.py
	circus/watcher.py
Added os.initgroups call to Process in order to initialize all groups correctly
disabled socket stats
Revert "disabled socket stats"

This reverts commit 92121cd4a6acf960b140937345eb6a176645fdb6.