Remove COGLColorCombiner2 and unused files

[Narann]

I suggest to check commits one by one. I try to make each commit do one specific things (the project can build between each commit) so it should be simpler this way.

In short:

• Remove the OGL 1.2 and 1.3
• Remove COGLColorCombiner2 (used by 1.2 and 1.3)
• Remove DirectX DecodedMux files (cpp and h) + a useless include.
• Remove CnvTNTCombiner files (cpp and h)
• Tiny "space reformatting" in config
• Update the config updater

Don't hesitate to code review and ask changes. :)

[Narann]

Thanks. :)