Add (IQ|PacketExtension)IntrospectionProvider

This simplifies code as there is no longer a distinction between
"normal" providers and introspection providers in ProviderManager
necessary.

It's also easier to get an idea where introspection is used for parsing.

smack-extensions/src/main/java/org/jivesoftware/smackx/time/provider/TimeProvider.java

@@ -0,0 +1,28 @@
+/**
+ *
+ * Copyright © 2014 Florian Schmaus
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.time.provider;
+
+import org.jivesoftware.smack.provider.IntrospectionProvider.IQIntrospectionProvider;
+import org.jivesoftware.smackx.time.packet.Time;
+
+public class TimeProvider extends IQIntrospectionProvider<Time> {
+
+    public TimeProvider() {
+        super(Time.class);
+    }
+
+}

smack-extensions/src/main/resources/org.jivesoftware.smackx/extensions.providers

@@ -13,7 +13,7 @@
     <iqProvider> 
         <elementName>time</elementName>
         <namespace>urn:xmpp:time</namespace>
-        <className>org.jivesoftware.smackx.time.packet.Time</className>
+        <className>org.jivesoftware.smackx.time.provider.TimeProvider</className>
     </iqProvider>
 
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