fix issue #171
bugfix: wakeup sleep coroutine should return BREAK
bugfix: sharedatad load name
set _ENV to metatable when shadredatad read file
Merge pull request #173 from cloudwu/dev

Dev
release 0.7.1
remove unneeded line
check new stream after finding cr
bugfix: datacenter.wait
bugfix: error in forked coroutine. and add skynet.term()
add testterm
bugfix: c.send returns nil when dest not exist
add skynet.harbor.linkmaster
bugfix: redirect need session
bugfix: sharedata can be update more than once
clear dead response in sharedatad
socket accept report addr:port
ready for 0.7.2
Merge pull request #175 from cloudwu/dev

release 0.7.2
fix a minor bug when unpacking string from skynet_socket_message