glide: Add antialiasing from upstream (not implemented for GLES).
glide: Look up chroma_color uniform.

Fixes fullscreen swap bug. No more GL_INVALID_OPERATION spamming.

Cherry picked from

https://github.com/libretro/mupen64plus-libretro/commit/0769f3c1dfe62ecac8571d5208e121470824ba89

https://github.com/mupen64plus/mupen64plus-video-glide64mk2/commit/e78a43b2ba249b5db88e660307b5bc2a9a944131
glide: Get rid of glEnable/glDisable(GL_TEXTURE_2D) from OGLES combiner.

Is fixed-function

Cherry picked from
https://github.com/mupen64plus/mupen64plus-video-glide64mk2/commit/d7afc9c79d68782d78e2ee6d6ee56bc55d86651d

See also:
http://stackoverflow.com/questions/11489238/opengl-es-2-0-texture-showing-up-black

  "You don't use glEnable for textures when you're using shaders.
  glEnable(GL_TEXTURE_2D) is only for fixed function pipeline, and thus
  it is not a valid operation in opengles2.0. Just remove the line
  completely."

Fixes several errors reported on Adreno devices when doing an OpenGL
trace.
glide: Use upstream screen resolution vars for screenshot.
glide: Update config defaults to match upstream.

See
https://github.com/mupen64plus/mupen64plus-video-glide64mk2/commit/b2a78163914a54d8ed1c1e2641cbf47f6896e250
front: Override new glide defaults.

This effectively reverts the config to what it was before the last
commit.
Merge branch 'align-glide-upstream'