Added passive scanning with cameras and sensors.

• This script will now only broadcast asteroids within a certain range to Whip's radar, and will only broadcast to the current grid, so now people on other ships won't see your asteroids in their radar.
  
• Autopilot now flies to a point 1000m outside the asteroid (configurable).

Tweaked Whip's Radar support so that the selected asteroid is considered a "Locked" target and so is highlighted in yellow.

Added support for Whip's Turret Based Radar.

Fixed some compilation issues that some folks were having. It worked on my machine though...

The initial release!