ntdll: Fix DVD_ReadStructure's layout of layer information

[Troy Rollo]

The DVD_LAYER_DESCRIPTOR structure is incorrectly documented by Microsoft, and 
even the layout in the DDK headers is wrong. The following patch adjusts the 
data returned according to what I have found by physically testing a variety 
of DVDs on Windows XP and inspecting the binary data returned.

It is not possible to write a test for this because it would require a bunch 
of DVDs to be inserted and removed from the drive.

ChangeLog:
	Fix DVD_ReadStructure to reflect what Windows actually does,
	not what Microsoft (incorrectly) documents it to do and not what
	the DDK headers (incorrectly) suggest it does.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: dvd.diffs
Type: text/x-diff
Size: 1865 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20060408/258dfd61/dvd.diff