Polyshape improvement

[James Henstridge]

I just checked in a few more distance algorithms to geometry.c, and made
the new polyshape use the polygon distance algorithm.  The polyshape is
now much nicer to work with :)

I also checked in some functions for bezier and ellipse distances, which
should be enough to help write a correct distance algorithm for the custom
shape code, which will be much better than the current bounding box
distance algorithm currently in use.

James.

--
Email: [EMAIL PROTECTED]
WWW:   http://www.daa.com.au/~james/