MegaFlow: Kernel flows are now wildcarded

Change-Id: I045a74c35977881537b97f93d286657ad4b28f08
Signed-off-by: Duarte Nunes <duarte@midokura.com>
Adds warnings to Java compilation

Change-Id: I64878ff604cecbfe9eb40693279f12551acb6dcd
Signed-off-by: Duarte Nunes <duarte@midokura.com>