Add CARD64/INT64 protocol types

The following commit to xcb/proto, included in the 1.9 release, added CARD64
and INT64 types.

    commit 4d8241c67c83957aa0f612da6823db2d18fdd314
    Author: Keith Packard <keithp@keithp.com>
    Date:   Thu Jul 11 15:56:54 2013 -0700

        Add CARD64/INT64 protocol types

Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Uli Schlachter <psychon@znc.in>