Update 1.1.10: Wall particles, bug fixes

Haven't had quite as much time the past couple of days. Regardless:

• turned up ammo pickup life by a couple seconds
• turned down ammo amount given
• added a hard visibility check to ai code to prevent anything from shooting if its not on screen
• added wall particles that spray off when hit with a bullet or laser
• added back the out of ammo noise
• staggered some calculation timers to give more consistent framerate
• fixed a typo in the controls
• changed over to a compiled executable rather than an interpreted one, for additional speed.