This is a substantial reorganization, This particular commit enables:
- building the progs for unices platforms
- glew is now built as a shared library (it is the default, and it is
inconvenient and pointless to shift away from that default)
- all progs get built by default
Render into two color buffers (render targets). Display half of each
buffer in the window. Use different color masks for each render target.
Only enable blending for the second render target.
Tests glBlitFramebuffer() between two texture/renderbuffer surfaces.
In particular, blit from level[1] of a cube map face to a 2D texture.
Used to find/fix bug in intel do_copy_texsubimage().
See commit aef1ab1073f3e30d699b99dae17518ed48b57c72
