First cut at migrating to Jetty 6 and prep for using an external

Jetty 6 package.

- Add several jars from the Jetty 6 distribution
- Update jetty.xml
- Add context XML files
- Update WorkingDir to migrate the content XML files
- Update RouterConsoleRunner and LocaleWebAppHandler
- Remove all old Jetty 5.1.15 local mods;
  this will break Seedless using a custom Server() constructor
- Update I2PRequestLog to be a mod of NCSARequestLog from 6.1.26
- Put I2PRequestLog in its own jar
- Copy MultiPartRequest and other required classes from Jetty 5.1.15
  and add it to susimail, as the replacement MultiPartFilter in
  Jetty 6 is difficult to migrate to, and does not support content-type
- Update i2psnark for Jetty 6
- Disable i2psnark RunStandalone, unused and instantiated Jetty 5
- Fix up all webapp build.xml to reference new jars

Not yet working: Plugin/webapp run detection and stopping, eepsite CGI
Not well tested: Plugins, classpaths, webapps

apps/routerconsole/java/src/net/i2p/router/web/ConfigClientsHandler.java

@@ -14,7 +14,7 @@ import net.i2p.router.client.ClientManagerFacadeImpl;
 import net.i2p.router.startup.ClientAppConfig;
 import net.i2p.router.startup.LoadClientAppsJob;
 
-import org.mortbay.jetty.Server;
+import org.mortbay.jetty.handler.ContextHandlerCollection;
 
 /**
  *  Saves changes to clients.config or webapps.config
@@ -286,7 +286,7 @@ public class ConfigClientsHandler extends FormHandler {
      * requested and add the .war to that one
      */
     private void startWebApp(String app) {
-        Server s = WebAppStarter.getConsoleServer();
+        ContextHandlerCollection s = WebAppStarter.getConsoleServer();
         if (s != null) {
                     try {
                         File path = new File(_context.getBaseDir(), "webapps");