vbe-edid

[Luc Verhaegen]

When looking into #24348 i dug out the read-edid code to see what i 
needed to do to separately test the failing 0x4F01 call on vbe with 
vm86.

I ended up rewriting the get-edid tool completely, it is tiny and its
functionality is trivial anyway, and now we have:
* actual readable C code, MIT license.
* useful verbosity.
* dumping of only the main edid block to mmm-dddd.edid (just 128bytes as 
i am too lazy to do things properly).

So, vbe-edid is available here: 
http://cgit.freedesktop.org/~libv/vbe-edid

For interpreting the edid block, use xorg/app/edid-decode.

Luc Verhaegen.