+ * New TRACE_user_link_variable interface:
+ User provides the name of the link and the tracing variable to attach to it
+ * the declaration of tracing categories must be done after the environment creation
+ * simpler tracing interface, just one way to declare categories
+ TRACE_category or TRACE_category_with_color, it is up to you
+ * links in the trace file are again identified by their names
+ * trace contains the full platform hierarchy exactly as declared using the ASes