Installing the Juno performance patches change some dialog strings

https://issues.jboss.org/browse/JBDS-2441
https://bugs.eclipse.org/bugs/show_bug.cgi?id=385272

I am seeing a new issue caused by installing the Eclipse Juno SR1 UI Optimization Patches - see attached screenshots - Some dialogs have uppercase letters replaced with lowercase letters - for example, "OK" becomes "ok" and "Cancel" becomes "cancel"

Changed the Mylyn test code to workaround this change