SMACK-286 Made ProviderManager much more configurable.

Separated the reading of provider files from the ProviderManager.  Manager now only manages.  Added ability to add collections of providers to the manager via a ProviderLoader, of which there is one default implementation which loads from the default file format.  Now provider files can be programmatically added at any time.  Also updated the configuration abilities so that a provider file can also be set via VM arg, as well as the smack configuration itself. Introduced Java Util Logging as well.

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/branches/smack_3_4_0@13861 b35dd754-fafc-0310-a699-88a17e54d16e

build/resources/META-INF/core.providers

@@ -0,0 +1,19 @@
+<?xml version="1.0"?> 
+<!-- Providers file for default Smack extensions -->
+<smackProviders> 
+    
+    <!-- Privacy -->
+    <iqProvider>
+        <elementName>query</elementName>
+        <namespace>jabber:iq:privacy</namespace>
+        <className>org.jivesoftware.smack.provider.PrivacyProvider</className>
+    </iqProvider>
+
+    <!-- Ping (XEP-199) Manager -->
+    <iqProvider>
+        <elementName>ping</elementName>
+        <namespace>urn:xmpp:ping</namespace>
+        <className>org.jivesoftware.smack.ping.provider.PingProvider</className>
+    </iqProvider>
+
+</smackProviders>

build/resources/META-INF/jul.properties

@@ -0,0 +1,3 @@
+# Java Util Logging configuration for Smack.
+handlers = java.util.logging.ConsoleHandler
+.level = WARNING

build/resources/META-INF/sample.providers

@@ -0,0 +1,17 @@
+<?xml version="1.0"?> 
+<!-- Sample providers file -->
+<smackProviders> 
+    
+    <iqProvider> 
+        <elementName>element</elementName> 
+        <namespace>ns</namespace> 
+        <className>com.myco.MyIQProvider</className> 
+    </iqProvider>
+    
+    <extensionProvider>
+        <elementName>elem</elementName>
+        <namespace>http://jabber.org/protocol/whoknows</namespace>
+        <className>com.myco.MyExtProvider</className>
+    </extensionProvider>
+
+</smackProviders>

build/resources/META-INF/smack-config.xml

@@ -22,9 +22,13 @@
     
     <!-- Classes that will be loaded when Smack starts -->
     <startupClasses>
-        <className>org.jivesoftware.smackx.ServiceDiscoveryManager</className>
+        <className>org.jivesoftware.smack.LoggingInitializer</className>
+        <className>org.jivesoftware.smack.provider.CoreInitializer</className>
+        <className>org.jivesoftware.smack.provider.VmArgInitializer</className>
         <className>org.jivesoftware.smack.PrivacyListManager</className>        
         <className>org.jivesoftware.smack.keepalive.KeepAliveManager</className>        
+        <className>org.jivesoftware.smackx.provider.ExtensionInitializer</className>
+        <className>org.jivesoftware.smackx.ServiceDiscoveryManager</className>
         <className>org.jivesoftware.smackx.XHTMLManager</className>
         <className>org.jivesoftware.smackx.muc.MultiUserChat</className>
         <className>org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamManager</className>