Tomcat: Bundle a stripped tomcat-coyote.jar with the utils

required to precompile jsps with tags (SusiDNS and Bote).
As of 6.0.39, these utils are required but they are not bundled
in the Tomcat deployer package, the main package is required.
This checkin has only the classes required from the jar.

apps/jetty/apache-tomcat/README-i2p.txt

+This is Apache Tomcat 6.x, supporting Servlet 2.5 and JSP 2.1.
+
+Retrieved from the file
+	apache-tomcat-6.0.41.tar.gz
+
+containing only a small subset of lib/tomcat-coyote.jar.
+
+See the buildTomcatUtilJar target in ../build.xml for the classes extracted and more information.
+
+LICENSE: see ../../../licenses/LICENSE-Apache2.0.txt

apps/jetty/build.xml

@@ -10,6 +10,9 @@
     <property name="javac.compilerargs" value="" />
     <property name="javac.version" value="1.6" />
     <property name="tomcat.lib" value="apache-tomcat-deployer/lib" />
+    <property name="tomcat.ver" value="6.0.41" />
+    <property name="tomcat2.lib" value="apache-tomcat-${tomcat.ver}/lib" />
+    <property name="tomcat2.lib.small" value="apache-tomcat/lib" />
 
     <target name="all" depends="build" />
 
@@ -152,6 +155,23 @@
         <ant target="copyTomcatLib" />
     </target>
 
+    <!-- Tomcat util jar.
+         As of Tomcat 6.0.39, the deployer does not contain some classes that are required
+         to precompile jsps with tags (SusiDNS and i2p-bote).
+         These classes are in the main Tomcat package, in lib/tomcat-coyote.jar.
+         As the jar is 800 KB and we only need 12 KB of that, we extract the required classes
+         to a new jar, created and checked in using this target.
+         Apparently this is only required for precompilation of jsps, so this is put in
+         with the JspC compiler jasper-runtime.jar below.
+     -->
+    <target name="buildTomcatUtilJar" >
+        <!-- take only what we need from the tomcat-coyote jar -->
+        <jar destfile="${tomcat2.lib.small}/tomcat-coyote-util.jar" >
+            <zipfileset src="${tomcat2.lib}/tomcat-coyote.jar"
+             includes="org/apache/tomcat/util/descriptor/* org/apache/tomcat/util/res/*" />
+        </jar>
+    </target>
+
     <!-- Tomcat.
          The glassfish jars bundled in Jetty 6 are way too old.
          For compatibility with very old I2P installations where the classpath
@@ -170,6 +190,7 @@
     <target name="copyTomcatLib" >
         <jar destfile="jettylib/jasper-runtime.jar" filesetmanifest="merge" >
             <zipfileset excludes="META-INF/LICENSE META-INF/NOTICE" src="${tomcat.lib}/jasper.jar" />
+            <zipfileset src="${tomcat2.lib.small}/tomcat-coyote-util.jar" />
         </jar>
         <jar destfile="jettylib/commons-el.jar" duplicate="preserve" filesetmanifest="merge" >
             <zipfileset excludes="META-INF/LICENSE META-INF/NOTICE" src="${tomcat.lib}/jasper-el.jar" />