build script: updated for latest SCons, moved config.h to build/, help and clean targets does not run configure any more, fixed GCC check, added check for zlib
Bugs
====
* Mingw + SSE does not work
Future Plans
============
* UV texturing
* PlanarMap should allow to choose normal axis
* Container should implement Shape interface to allow building hierarchies
* Container should allow local space transformations
* stochastic oversampling
* absorbtion of refracted rays in dense materials (can be computed using shape distance and some 'absorbance' constant)
* put everything into a namespace