mark internal packages as x-internal
diff --git a/plugins/org.eclipse.objectteams.otdt.refactoring/META-INF/MANIFEST.MF b/plugins/org.eclipse.objectteams.otdt.refactoring/META-INF/MANIFEST.MF
index 56d7861..2823039 100644
--- a/plugins/org.eclipse.objectteams.otdt.refactoring/META-INF/MANIFEST.MF
+++ b/plugins/org.eclipse.objectteams.otdt.refactoring/META-INF/MANIFEST.MF
@@ -17,12 +17,12 @@
  org.eclipse.ltk.ui.refactoring;bundle-version="[3.4.1,4.0.0)",
  org.eclipse.ui.editors,
  org.eclipse.objectteams.otdt
-Export-Package: org.eclipse.objectteams.otdt.internal.refactoring.corext.base,
- org.eclipse.objectteams.otdt.internal.refactoring.adaptor.extractmethod,
- org.eclipse.objectteams.otdt.internal.refactoring.corext,
- org.eclipse.objectteams.otdt.internal.refactoring.otrefactorings.extractcallin,
- org.eclipse.objectteams.otdt.internal.refactoring.otrefactorings.inlinecallin,
- org.eclipse.objectteams.otdt.internal.refactoring.util
+Export-Package: org.eclipse.objectteams.otdt.internal.refactoring.corext.base;x-internal:=true,
+ org.eclipse.objectteams.otdt.internal.refactoring.adaptor.extractmethod;x-internal:=true,
+ org.eclipse.objectteams.otdt.internal.refactoring.corext;x-internal:=true,
+ org.eclipse.objectteams.otdt.internal.refactoring.otrefactorings.extractcallin;x-internal:=true,
+ org.eclipse.objectteams.otdt.internal.refactoring.otrefactorings.inlinecallin;x-internal:=true,
+ org.eclipse.objectteams.otdt.internal.refactoring.util;x-internal:=true
 Bundle-RequiredExecutionEnvironment: J2SE-1.5
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.objectteams.otdt.internal.refactoring.OTRefactoringPlugin