Added built-in scoutsim teleop!
Merge branch 'master' of ssh://roboclub.org/home/svn/scoutos
Generate a blank image for lines/walls if one doesn't exist.
Edited Sonar to display points on simulator.
Changed rate of sonar scan to 0.5sMade a new wxDC graphics object for sonar
Added race_walls again, whoops.
Added a new grid map for testing.
Updated scout size. Now 1px = 0.5cm.
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