QuakeSpasm

Version 0.92.0 of QuakeSpasm is released.
Changes since the previous version:

• SDL2 Game Controller support.

• Contrast support with new "contrast" cvar, behaving the same as
  MarkV. It may be a useful alternative to the existing gamma control
  for laptops in a bright environment, etc. Raising contrast gives
  less of a gray/washed out look than raising gamma, but at a
  disadvantage: colors near white get clipped to white.

• RMQ protocol (999) support, adapted from RMQEngine.
• New "-protocol x" command line option. Accepted values for 'x' are
  15 (NetQuake), 666 (FitzQuake, default), and 999 (RMQ).
• New "setpos" console command.
• New "vid_borderless" cvar for getting a borderless window.
• Increased MAX_MAP_LEAFS from 65535 to 70000 and MAX_LIGHTMAPS from
  256 to 512 in order to handle the oms3 map pack.
• Server edicts are now allocated using malloc instead of allocating
  on the hunk.
• gl_clear now defaults to 1.
• Fix items falling out of the world on oms3.bsp on SSE builds.
• Worked around an OSX 10.6 driver bug when using FSAA, which was
  leading to an unplayable HOM effect on the rest of the screen.
• Fix wrong trace endpoint from the tracepos console command.
• Updated some of the third-party libraries. Other fixes/clean-ups.