EDID (Extended Display Identification Data) is a VESA standard data format
that contains information about a monitor and its capabilities.

The information is stored in the monitor and is used to communicate with the
system through a Display Data Channel (DDC), which sites between the monitor
and the PC graphics adapter.

Inspired from:
- read-edid
- RedHat kudzu ddcprobe
- SuSE hwinfo

int10 and x86emu support by Gwenole Beauchesne <gbeauchesne@mandrakesoft.com>
(partly from Xorg code)

re-organised by Pixel <pixel@mandrakesoft.com>

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monitor-probe-using-X inspiration is Ubuntu's xresprobe,
many thanks to Daniel Stone and Fabio M. Di Nitto.

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cvt.c is gtf.c modified. some info about vesa standards:

  DDC 1994

  DMT = Discrete Monitor Timings
     started in 1989

     DMT Version 1.0, Revision 0.8 (1998)
         = 28 VESA Standards 
	 + 3 VESA Guidelines (approved, but not endorsed by VESA) 
	 + 2 Industry Standards.

  GTF in 1996
      designed for CRT
      doesn't account for different aspect ratios

  CVT in 2003
      to replace GTF

  CVT-RB = Coordinated Video Timings-Reduced Blanking 

http://www.dell.com/downloads/global/vectors/2003_cvt.pdf
http://www.vesa.org/Public/EEDIDguideV1.pdf