[Xcb] [PATCH] libxcb: Fix multiple xidtype lists in the same request

[Peter Harris]

The attached patch fixes a bug where c_client.py wasn't generating
*_end functions, but expected them to exist in order to find the
subsequent list's start. I initially hit this bug when working on
randr: http://lists.freedesktop.org/archives/xcb/2008-November/004037.html

c_client.py compares field.field_type[0] against a hard-coded list of
cardinal types. The trouble is, <xidtype>s have a field_type[0] of
'xcb'. Just like structures and other non-cardinal types.

The fix appears to be replacing _cardinal_types with
field.type.member.is_simple checks.

The down-side is, after this patch all sorts of *_iterator functions
go away (and are replaced with *_end functions). I'm not sure if
anybody is using those functions today, or if we need to provide
backwards-compatibility.

Could someone with more knowledge of c_client.py than I have please
review this patch?

Thanks,
 Peter Harris
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