Try to consume Bug 440687 from JDT/Core
diff --git a/plugins/org.eclipse.objectteams.otequinox/build.properties b/plugins/org.eclipse.objectteams.otequinox/build.properties
index 3fffd82..624a67a 100644
--- a/plugins/org.eclipse.objectteams.otequinox/build.properties
+++ b/plugins/org.eclipse.objectteams.otequinox/build.properties
@@ -13,4 +13,5 @@
                about.ini
 javacProjectSettings=true
 
-compilerArg = -annotationpath ${buildDirectory}/plugins/${bundleId}/annotations/plugins
+compilerArg = -annotationpath ${buildDirectory}/plugins/${bundleId}/annotations/plugins${path.separator}\
+${buildDirectory}/plugins/${bundleId}/annotations/jre