This is an extraction of the Mesa 3-D library's software rasterizer and
offscreen rendering implementation of OpenGL 2.1 style APIs.  For ease of setup
and compilation, the 7.0.4 release of Mesa was used as a basis.  (This fork is
not affiliated with the Mesa project - for the modern implementation see
https://mesa3d.org)

The goals of this particular fork are NOT speed, but rather a portable,
reliable cross platform rendering method that does not require any outside
support from the OS or graphics hardware.  The idea is to guarantee an
application's ability to produce scene rasterizations as images even when the
primary graphics stack of the machine is unavailable.

The examples directory may simply be removed if a project bundling the
libosmesa sources doesn't wish to include it - the build system will adapt
appropriately.

Changes are (or at least are intended to be) relatively minor and include
things like static analyzer clean-ups and updating header includes to avoid
accidentally including system versions of gl.h.