#1 Compile errors in version 0.21

[Bob Mottram]

I tried the code for version 0.21, and came across the following compile errors.

configfile.cpp
requires header files string.h, stdlib.h

edgedetector.h
Remove EdgeDetector:: from distance method

rgb32.h
missing header stdlib.h

rtesselation.cpp
missing header stdlib.h

I did manage to get to the VRML output, but sadly it looks like a lot more work needs to be done before you have anything very practical.

- Bob