Build: Compile resource bundles from ant, not msgfmt,

speeding up builds with translations by 20x

apps/i2psnark/java/build.xml

@@ -150,6 +150,11 @@
         <exec executable="sh" osfamily="windows" failifexecutionfails="false" >
             <arg value="./bundle-messages.sh" />
         </exec>
+        <javac source="${javac.version}" target="${javac.version}" 
+               includeAntRuntime="false"
+               srcdir="build/messages-src" destdir="build/obj">
+            <compilerarg line="${javac.compilerargs}" />
+        </javac>
     </target>
 
     <target name="poupdate" depends="builddep, compile">

apps/i2psnark/java/bundle-messages.sh

@@ -97,7 +97,13 @@ do
         echo "Generating ${CLASS}_$LG ResourceBundle..."
 
         # convert to class files in build/obj
-        msgfmt --java --statistics -r $CLASS -l $LG -d build/obj $i
+        TD=build/messages-src-tmp
+        TDX=$TD/org/klomp/snark/web
+        TD2=build/messages-src
+        TDY=$TD2/org/klomp/snark/web
+        rm -rf $TD
+        mkdir -p $TD $TDY
+        msgfmt --java --statistics --source -r $CLASS -l $LG -d $TD $i
         if [ $? -ne 0 ]
         then
             echo "ERROR - msgfmt failed on ${i}, not updating translations"
@@ -106,6 +112,8 @@ do
             RC=1
             break
         fi
+        mv $TDX/messages_$LG.java $TDY
+        rm -rf $TD
     fi
 done
 rm -f $TMPFILE