Turn Netty's leak detection to the max for cluster unit test.
1) Turn Netty's leak detection to the max for cluster unit test.
2) Clean up imports.
refactoring of MucRoom to support multiple client connections per nickname
Merge branch 'master' of github.com:Kixeye/kixmpp

Conflicts:
	kixmpp-server/src/main/java/com/kixeye/kixmpp/server/cluster/task/RoomBroadcastTask.java
	kixmpp-server/src/main/java/com/kixeye/kixmpp/server/module/muc/MucRoom.java
Merge branch 'master' of github.com:Kixeye/kixmpp

Conflicts:
	kixmpp-server/src/main/java/com/kixeye/kixmpp/server/cluster/task/RoomBroadcastTask.java
	kixmpp-server/src/main/java/com/kixeye/kixmpp/server/module/muc/MucRoom.java
added license headers
Fixing warnings and compilation error.
added removeUser(KixmppJid)
Merge branch 'master' of github.com:Kixeye/kixmpp
more tests for MucRoom
Stubbing in cluster Map Reduce handling.
Merge remote-tracking branch 'origin/master'
Adding room history support.
Merge branch 'master' of https://github.com/Kixeye/kixmpp.git

Conflicts:
	kixmpp-server/src/main/java/com/kixeye/kixmpp/server/module/muc/MucRoom.java
Updating license headers.