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/WebAppConfiguration.java

@@ -6,7 +6,8 @@ import java.util.StringTokenizer;
 
 import net.i2p.I2PAppContext;
 
-import org.mortbay.jetty.servlet.WebApplicationContext;
+import org.mortbay.jetty.webapp.Configuration;
+import org.mortbay.jetty.webapp.WebAppContext;
 
 
 /**
@@ -31,16 +32,16 @@ import org.mortbay.jetty.servlet.WebApplicationContext;
  *  @since 0.7.12
  *  @author zzz
  */
-public class WebAppConfiguration implements WebApplicationContext.Configuration {
-    private WebApplicationContext _wac;
+public class WebAppConfiguration implements Configuration {
+    private WebAppContext _wac;
 
     private static final String CLASSPATH = ".classpath";
 
-    public void setWebApplicationContext(WebApplicationContext context) {
+    public void setWebAppContext(WebAppContext context) {
        _wac = context;
     }
 
-    public WebApplicationContext getWebApplicationContext() {
+    public WebAppContext getWebAppContext() {
         return _wac;
     }
 
@@ -87,10 +88,16 @@ public class WebAppConfiguration implements WebApplicationContext.Configuration
             else
                 path = dir.getAbsolutePath() + '/' + elem;
             System.err.println("Adding " + path + " to classpath for " + appName);
-            _wac.addClassPath(path);
+            _wac.setExtraClasspath(path);
         }
     }
 
     public void configureDefaults() {}
     public void configureWebApp() {}
+
+    /** @since Jetty 6 */
+    public void deconfigureWebApp() {}
+
+    /** @since Jetty 6 */
+    public void configureClassLoader() {}
 }