unarmed mech-lizard spawn item fixed

guns added to the drivable mech-golem

Massive update with DRIVABLE versions. New map with all types of the robots. Some little bugs fixed.

Added laser script taken from Laser Example by Micro. The armed mech-laserboy has a laser now.

Robot control has been moved to a local copy of the standard robot.lua script. This avoids the influence of other external mods on the performance of my mod. So now it works with enabled 'destructible robots' mod.

Added aggressive armed versions of the robots for spawning!
Fixed some joint positions