Repaired ANT build for unsigned Web Start distribution

Author: pdavidc

build.xml

@@ -306,7 +306,7 @@
         </jar>
     </target>
 
-    <target name="signWebStartSources" depends="keystoreSetup" if="keystore.enabled">
+    <target name="signWebStartSources" depends="keystoreAvailable" if="keystore.isAvailable">
         <property file="${basedir}/keystore.properties"/>
         <copy todir="${webstart.jar.dir}">
             <fileset dir="${webstart.unsigned.dir}">
@@ -324,23 +324,26 @@
         </signjar>
     </target>
 
-    <target name="keystoreSetup">
-        <condition property="keystore.enabled" value="true" else="false">
-            <available file="${basedir}/keystore.properties"/>
-        </condition>
-    </target>
+    <target name="bundleWebStart" depends="bundleWebStartSigned, bundleWebStartUnsigned"/>
 
-    <target name="bundleWebStart">
+    <target name="bundleWebStartSigned" if="keystore.isAvailable">
         <zip destfile="${webstart.out.dir}/worldwind-webstart.zip">
             <fileset dir="${webstart.jar.dir}"/>
             <fileset dir="${webstart.jnlp.dir}"/>
         </zip>
+    </target>
+
+    <target name="bundleWebStartUnsigned">
         <zip destfile="${webstart.out.dir}/worldwind-webstart-unsigned.zip">
             <fileset dir="${webstart.unsigned.dir}"/>
             <fileset dir="${webstart.jnlp.dir}"/>
         </zip>
     </target>
 
+    <target name="keystoreAvailable">
+        <available property="keystore.isAvailable" file="${basedir}/keystore.properties"/>
+    </target>
+
     <!-- Tasks for assembling the MIL-STD-2525 symbology package. Rasterizes MIL-STD-2525 SVG image files into PNG image
          files. The maxwidth and height parameters control the PNG image dimensions, where the width varies depending on
          the SVG image's aspect ratio. PNG files are written to the destination directory according to their relative