Weapon accuracy increased by ship mobility

[GoogleCodeExporter]

Proposition for following:

When ships are close enough (at most one slot away) attacker gains accuracy 
bonus from mobility. Idea is to add another benefit to close combat fighters 
and to enable bomb-like weapons that are ineffective at long range but good in 
close range.

Original issue reported on code.google.com by subchann...@gmail.com on 17 May 2012 at 9:57

[subchannel13]

Invalid at the moment, will be revisited when balancing the game.