games/robocode: Update from 1.9.2.5 to 1.9.2.6

Changelog: http://robo-code.blogspot.de/2017/01/robocode-1926.html

Also:

• pass maintainership to dbaio@bsd.com.br
• add NO_ARCH

PR: 215736
Submitted by: Danilo G. Baio <dbaio@bsd.com.br>
Reported by: Jochen Neumeister <joneum@bsdproject.de>