Skinny: packet-skinny
Add tools path to the python search path, fixing cog.py generation of package-skinny.c from packet-skinny.c.in
Add GPLv2 License to parse_xml2skinny_dissector.py

Change-Id: I91b76867b02d8cebc40bba35151db48bc2fcaeca
Reviewed-on: https://code.wireshark.org/review/3819
Reviewed-by: Evan Huus <eapache@gmail.com>
Petri-Dish: Evan Huus <eapache@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>