Make sure netty detects the right java version when running on android. See #282

src/main/java/org/jboss/netty/util/internal/DetectionUtil.java

@@ -70,6 +70,16 @@ public final class DetectionUtil {
     }
 
     private static int javaVersion0() {
+        try {
+            // Check if its android, if so handle it the same way as java5.
+            //
+            // See https://github.com/netty/netty/issues/282
+            Class.forName("android.app.Application");
+            return 5;
+        } catch (ClassNotFoundException e) {
+            //Ignore
+        }
+        
         try {
             Deflater.class.getDeclaredField("SYNC_FLUSH");
             return 7;