* Sync both files as much as possible.
* Another round of general cleanup.
* Fix stencil tests.
* Simplify gamma handling, hardware gamma is now default.
* Support new client <-> renderer API.
* Another round of general cleanup.
* Introduce gl3_libgl cvar to force a libGL.
* Fix stencil buffer tests.
* Further untangle window <-> context stuff.
The window is now fully at client side, the context at renderer side.
This is another break of the renderer API. And at least GL1 needs to
track this, it's broken for now.
* Even more syntax and code style fixes.
* Rename functions to match their actual purpose.
* Fix comments.
* SDL initialization and shutdown is now client side only. With
SDL 1.2 finally gone there's no need to involve the renderers
in it.
This breaks the client <-> renderer API. I haven't bumped the API
version with this commit because there're likely more changes when
I'm going through the renderer side of things. The VID backend also
needs a lot of love...
It might be a good idea to move this SDL backend files into the client
and rename them. We'll decide that at a later time.
* Some globals could be made static.
* Add comments were appropriate.
* And format the file to one coding stile. What is so hard with
keeping to one style?! MY IDE is even able to interfere the
style from existing code...
* CDA was only supported of the client was build with SDL 1.2. Our
Windows binaries had no CDA support for years, I'm pretty sure that
it never worked on Linux and no computer build after 2005 has even
the necessary hardware. So let's just remove it.
* X11GAMMA was a hack to work around SDL 1.2s inability to set the
gamma on newer xorg-server versions. It has been broken for some
time now an is rather ugly. Remove it.
This is the first step in removing SDL 1.2 support.
FreeBSD has supported printing backtraces for years. The API is the same
as on Linux, the only difference is that libexecinfo must be linked as a
seperate library. Since the last FreeBSD version with backtrace support
(FreeBSD 9.3) went out of support some time ago unconditionally enable
the printing.
