update plugin.xml for 3.0 compliance
diff --git a/platform/org.eclipse.platform/plugin.xml b/platform/org.eclipse.platform/plugin.xml
index ef28888..a1ca26b 100644
--- a/platform/org.eclipse.platform/plugin.xml
+++ b/platform/org.eclipse.platform/plugin.xml
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<?eclipse version="3.0"?>
 <plugin
   name="%pluginName"
   id="org.eclipse.platform"