Merge pull request #692 from rizard/master

...in/java/net/floodlightcontroller/core/util/AppCookie.java

...t/floodlightcontroller/core/util/AppIDInUseException.java

...ightcontroller/core/util/AppIDNotRegisteredException.java

...main/java/net/floodlightcontroller/firewall/Firewall.java

.../java/net/floodlightcontroller/forwarding/Forwarding.java

...java/net/floodlightcontroller/routing/ForwardingBase.java

...ava/net/floodlightcontroller/core/util/AppCookieTest.java

.../java/net/floodlightcontroller/firewall/FirewallTest.java

...a/net/floodlightcontroller/forwarding/ForwardingTest.java