refine config.cmake and example cmakes
ref #60 refine and extend interpolators
Add EXTRA_LIBS to libs
make x11 native windows almost work under os x
refine config.cmake and fix math macros
Fix compilation for linux
Make interation methods public to make Navigation usable
Merge branch 'mac_x11_port'
Move include of glxew
enforce forward decls
Merge branch 'master' of https://github.com/hpicgs/glow.git