show file size of installers once complete

buildInstallers.xml

@@ -105,7 +105,11 @@ POSSIBILITY OF SUCH DAMAGE.
 
     <chmod file="${installers.dir}/${win.linux.32.64.installer.jar}" perm="ugo+rx"/>
     <chmod file="${installers.dir}/${macosx.installer.jar}"          perm="ugo+rx"/>
-
+    
+    <length file="${installers.dir}/${win.linux.32.64.installer.jar}" property="length.win.linux.32.64.installer.jar"/>
+    <length file="${installers.dir}/${macosx.installer.jar}"          property="length.macosx.installer.jar"/>
+    <echo message="Installer file sizes: ${win.linux.32.64.installer.jar}=${length.win.linux.32.64.installer.jar} bytes, ${macosx.installer.jar}=${length.macosx.installer.jar} bytes"/>
+    <echo/>
     <echo message="IzPack installer builds complete"/>
 
   </target>