Don't fail if we can't find the Windows exe launcher. This lets us build for older netbeans platforms where the
package didn't contain Windows launchers.

Index: netbeans/apisupport.harness/release/suite.xml
===================================================================
--- netbeans.orig/apisupport.harness/release/suite.xml	2011-09-07 19:01:15.758711116 +0100
+++ netbeans/apisupport.harness/release/suite.xml	2011-09-07 19:01:43.127877804 +0100
@@ -322,7 +322,7 @@
         <condition property="app.exe.prefix" value="" else="pre7_">
             <isset property="nbexec.dll.found"/>
         </condition>
-        <copy file="${harness.dir}/launchers/${app.exe.prefix}app.exe" tofile="${build.launcher.dir}/bin/${app.name}.exe" overwrite="true"/>
+        <copy file="${harness.dir}/launchers/${app.exe.prefix}app.exe" tofile="${build.launcher.dir}/bin/${app.name}.exe" failonerror="false" overwrite="true"/>
         <copy file="${harness.dir}/launchers/${app.exe.prefix}app_w.exe" tofile="${build.launcher.dir}/bin/${app.name}_w.exe" failonerror="false" overwrite="true"/>
 
         <copy file="${harness.dir}/launchers/app.sh" tofile="${build.launcher.dir}/bin/${app.name}"/>