Fixed clipboard pasting in readonly files in edit.
Fixed crash for too large clipboard - was slightly too optimistic there. Now explicitly forbidding > 64k messages and splitting smaller ones int 16k packets just to be safe.
Merge branch 'master' of github.com:MightyPirates/OpenComputers into master-MC1.7.10

Conflicts:
	src/main/scala/li/cil/oc/client/PacketSender.scala