Rewrote the polygon.[ch]xx class to save actual point data, rather than

Rewrote the polygon.[ch]xx class to save actual point data, rather than
  indices to points.
Then with that in place I added wrapper functions for the libgpc calls so
  I could ensure that I was always deallocating any allocated memory (which
  was a concern before.)
This was all done in order to facilitate sliver detection and elimination
  which is my next order of business.
These changes then were propogated through out the construction tools.