Merge pull request #461 from rizard/master

.../java/net/floodlightcontroller/core/IOFSwitchBackend.java

...main/java/net/floodlightcontroller/core/OFConnection.java

...a/net/floodlightcontroller/core/OFConnectionCounters.java

src/main/java/net/floodlightcontroller/core/OFSwitch.java

.../floodlightcontroller/core/internal/IOFSwitchManager.java

...dlightcontroller/core/internal/ISwitchDriverRegistry.java

...htcontroller/core/internal/NaiveSwitchDriverRegistry.java

...t/floodlightcontroller/core/internal/OFSwitchManager.java

...lightcontroller/core/web/AllSwitchStatisticsResource.java

...dlightcontroller/core/web/ControllerSwitchesResource.java

...va/net/floodlightcontroller/core/web/CoreWebRoutable.java

...va/net/floodlightcontroller/core/web/CounterResource.java

...tcontroller/core/web/SwitchCounterCategoriesResource.java

.../floodlightcontroller/core/web/SwitchCounterResource.java

...net/floodlightcontroller/core/web/SwitchRoleResource.java

...t/floodlightcontroller/debugcounter/DebugCounterImpl.java

...oodlightcontroller/debugcounter/DebugCounterResource.java

...lightcontroller/debugcounter/DebugCounterServiceImpl.java

.../net/floodlightcontroller/debugcounter/IDebugCounter.java

...lightcontroller/debugcounter/MockDebugCounterService.java