Added MacOSx x86_64 SWT

git-svn-id: http://dev.eclipse.org/svnroot/technology/org.eclipse.stem/branches/STEM_1_0_0@563 92a21009-5b66-0410-b83a-dc787c41c6e9
diff --git a/org.eclipse.stem.ui/stem.product b/org.eclipse.stem.ui/stem.product
index 247ab02..ce0b214 100644
--- a/org.eclipse.stem.ui/stem.product
+++ b/org.eclipse.stem.ui/stem.product
@@ -165,6 +165,7 @@
       <plugin id="org.eclipse.swt"/>
       <plugin id="org.eclipse.swt.carbon.macosx" fragment="true"/>
       <plugin id="org.eclipse.swt.cocoa.macosx" fragment="true"/>
+      <plugin id="org.eclipse.swt.cocoa.macosx.x86_64" fragment="true"/>
       <plugin id="org.eclipse.swt.gtk.linux.x86" fragment="true"/>
       <plugin id="org.eclipse.swt.gtk.linux.x86_64" fragment="true"/>
       <plugin id="org.eclipse.swt.win32.win32.x86" fragment="true"/>