Added syntax coloring support for the de facto standard built-in predicates retractall/1, ground/1, keysort/2, sort/2, and numbervars/3. Added syntax coloring for the e/0 and pi/0 as de facto Prolog standard built-in arithmetic functions. Changed: U trunk/Bundles/Logtalk.tmbundle/Syntaxes/Logtalk.plist