small spelling fix
=rem #3621 Make Netty respect akka.daemonic setting
#3655 clu Stop sending EndHeartbeat after ack
Merge pull request #1758 from akka/wip-3621-make-daemonic-work-with-remoting-master-ban

(forward port) =rem #3621 Make Netty respect akka.daemonic setting
=rem #3643 Remove warning message from normal remote system shutdown.

Conflicts:
	akka-remote/src/main/scala/akka/remote/Remoting.scala
	project/AkkaBuild.scala
=act #3640 Fix how BalancingDispatcher apply mailbox configuration
Merge pull request #1761 from akka/wip-3640-fix-balancing-dispatcher-mailbox-config-master-ban

(forward port) =act #3640 Fix how BalancingDispatcher apply mailbox configuration
Merge pull request #1760 from akka/wip-3643-normal-remoting-shutdown-prints-warning-master-ban

(forward port) =rem #3643 Remove warning message from normal remote system shutdown.
!rem #3646: Optimize sending of Ack messages
Merge pull request #1754 from drewhk/wip-3646-sysmsg-ack-optimization-drewhk

!rem #3646: Optimize sending of Ack messages
Merge pull request #1759 from akka/wip-3655-stop-endheartbeat-patriknw

#3655 clu Stop sending EndHeartbeat after ack
Merge pull request #1732 from luc-at-jr/master

small spelling fix in Slf4jEventHandler.scala
!per #3652 Custom snapshot and persistent message serialization

- Protobuf serializer for Persistent message
- Configurable serializer for Persistent message's payload
- Configurable serializer for snapshots
Merge pull request #1757 from eligosource/wip-3652-custom-serialization-krasserm

!per #3652 Custom snapshot and persistent message serialization