Merge into master from pull request #69:

Removing prints not through logger (https://github.com/floodlight/floodlight/pull/69)

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

@@ -423,13 +423,11 @@ public class OFMessageFilterManager
                 packetClient.pushMessageAsync(sendMsg);
             }
         } catch (TTransportException e) {
-            log.info("Caught TTransportException: {}", e);
-            System.out.println(e);
+            log.error("Caught TTransportException: {}", e);
             disconnectFromPSServer();
             connectToPSServer();
         } catch (Exception e) {
-            log.info("Caught exception: {}", e);
-            System.out.println(e);
+            log.error("Caught exception: {}", e);
             disconnectFromPSServer();
             connectToPSServer();
         }

src/main/java/net/floodlightcontroller/core/web/AllSwitchStatisticsResource.java

@@ -127,8 +127,7 @@ public class AllSwitchStatisticsResource extends SwitchResourceBase {
             try {
                 Thread.sleep(1000);
             } catch (InterruptedException e) {
-                System.out.println("CoreWebManageable thread failed to sleep!"); 
-                e.printStackTrace();
+                log.error("Failed to sleep", e);
             }
         }