eRadiRace: Using Draw API

Here is a re-write of the base eRadiRace code, using the new Flash 8 Draw API to make the trails and do the simple collision.

Added a musical score. Now at v0.254

It still has a few bugs:

• Not all sounds seem to be playing when called (intermittent).
• [Fixed] A last minute change to add the Tutorial screen has made the avatars disappear after the first round.
• Collision could be tightened up just a bit.
• The frame where the player collides with the line is delayed in drawing by about a half a second, which makes it look like they shouldn't have lost.

I'll fix that avatar thing and post up the game loop code.