tools lib traceevent: Add copyright header

Adding a missing copyright header to parse-utils.c. Assuminng that the
license is LGPL like the rest of the trace-cmd library code.

Signed-off-by: Jon Stanley <jonstanley@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1347127251-4695-1-git-send-email-jonstanley@gmail.com


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>