NOTE: In texture_setimage, I had to move variables to the top of the
scope because microsoft's C compiler will give the legacy C90 error of:
'illegal use of this type as an expression'.

To sum it up, microsoft's C compiler is still utter garbage.

This trick uses FBOs to allow for copying textures without the need for
special texture copy functions.

With the permission of my fellow contributors, I'm switching obs-studio back to GPL v2+ to prevent issues between this project and the original OBS project, and for personal reasons to avoid legal ambiguity (not political reasons, I admittedly would prefer GPL v3+)

fix up the rest of the GL code, add glew to project, add makefiles for opengl, fix makefiles so that it can be built with gcc, update project files to automatically output to the build directory

change names, fix some bugs, minor GL/D3D fixes, update tests, fix effect files, output a little more debug information

update graphics subsystem code to add mipmap support and also add initial GL texture stuff and helper functions