Add helper method that checks if an attribute equals a given object.
Merge remote-tracking branch 'bigswitch/master' into misc

Conflicts:
	bigfloodlight/src/test/java/com/bigswitch/floodlight/tunnelmanager/TunnelManagerPollTest.java

Arrgggh. Only whitespace changed.
Fix tabs
Fix error handling during switch handshake
Add unit test for null sw to RoleChanger
Merge branch 'backport' of ../bsc/bigswitchcontroller
Merge pull request #363 from kwanggithub/master

Floodlight subtree update