Make Provider.parse() just throw Exception

instead of throwing XmlPullParserException, IOException and
SmackException.

Add a guard to AbstractXMPPConnection.processPacket() to always re-throw
RuntimeExceptions.

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/provider/JingleProvider.java

@@ -48,7 +48,7 @@ public class JingleProvider extends IQProvider<Jingle> {
      */
     @Override
     public Jingle parse(XmlPullParser parser, int intialDepth)
-                    throws XmlPullParserException, IOException, SmackException {
+                    throws Exception {
 
         Jingle jingle = new Jingle();
         String sid = "";