vgabios in kvm doesn't offer 1920x1200

The change in bug 1022222 added 1920x1080, but did it by replacing 1920x1200. Both should be supported. From bug 1022222 (and my own experience with a Windows 7 instance in qemu-kvm) the resolutions that are offered in hires are:
  1920x1080
  1600x900
  1280x1024
  1280x800
  1152x864
  1024x768
  800x600
From the code there seem to be places for 8 resolutions, and one is left unused. 1920x1200 should be put back.

This is a regression, as previous releases of vgabios (in precise, for instance) did support 1920x1200, and I was using that. Dropping 1920x1200 isn't so great.

What I think should be offered through EDID is:
  1920x1200 (16:10)
  1920x1080 (16:9)
  1600x900 (16:9)
  1280x1024 (4:3)
  1280x800 (16:10)
  1152x864 (4:3)
  1024x768 (4:3)
  800x600 (4:3)

Or better:
  1920x1200 (16:10)
  1920x1080 (16:9; 1080i, 1080p)
  1600x1200 (4:3)
  1280x1024 (4:3)
  1280x800 (16:10)
  1280x720 (16:9; 720p)
  1024x768 (4:3)
  800x600 (4:3)