fix for pde build to find extra perfmsr stub jar -- prefered form
diff --git a/plugins/org.eclipse.jem.util/build.properties b/plugins/org.eclipse.jem.util/build.properties
index 294f7eb..aa0d851 100644
--- a/plugins/org.eclipse.jem.util/build.properties
+++ b/plugins/org.eclipse.jem.util/build.properties
@@ -21,4 +21,4 @@
property_files/,\
jemutil-nonworkbnech/
jars.compile.order = .
-jars.extra.classpath = ./org.eclipse.perfmsr.core.stub/perfmsr.jar
+extra.. = ./org.eclipse.perfmsr.core.stub/perfmsr.jar