[Xcb] [lib] Remove XPrint, fixes, "API" break

[Daniel Martin]

Hi,

and here're some more patches I've prepared:


[lib 1/5] c_client.py: Fix _sizeof() functions

That's the attachment from
    https://bugs.freedesktop.org/show_bug.cgi?id=68387


[lib 2/5] Remove XPrint extension

(Same comment as in the previous patches for proto.)


[lib 3/5] c_client.py: Prefer bit shifts over values in enum

https://bugs.freedesktop.org/show_bug.cgi?id=71837

With this all enum values will have the 'u' suffix, the values are
aligned and a bit shift will be used if available.


[lib 4/5] c_client.py: Use compliant header guard

https://bugs.freedesktop.org/show_bug.cgi?id=70680

Here I've just removed the leading underscores. I could add an "XCB_"
prefix if requested.


[lib 5/5] c_client.py: No sizeofs for Events, Replies, Requests

Those sizeofs are useless. They're serialization helpers used within
iterators for lists. And we don't have lists of events, replies or
requests.
With this patch we've roughly 300 fewer functions, which reflects in
~11k LOC.


Cheers,
    Daniel Martin