Revision 353967

- Update to 2.0.2
- Use USES=ncurses
- Use USES=readline:port because tig requires readline 6.2+

Changes:	http://jonas.nitro.dk/tig/NEWS.html
PR:		ports/189539
Submitted by:	Gasol Wu <gasol.wu@gmail.com>
Approved by:	Wei Guo <darcsis@gmail.com> (maintainer)