libX11: Changes to 'master'

[Daniel Stone]

 src/xcb_io.c |   96 +++++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 81 insertions(+), 15 deletions(-)

New commits:
commit 761b8aa0c9b3c58c478ac5ea1b3aaafadcfc1325
Author: Daniel Stone <daniel at fooishbar.org>
Date:   Thu May 12 16:21:50 2011 +0200

    XCB: Add more friendly error messages for common asserts
    
    This patch adds more friendly error messages for three common classes of
    assertion:
        - missed sequence numbers due to being griefed by another thread
        - unknown requests in queue due to being griefed by another thread
        - extensions dequeuing too much or too little reply data
    
    It adds error messages offering advice (e.g. call XInitThreads() first)
    on stderr, but still generates actual assertions.  Hopefully this means
    it's a little more Googleable and a little less frightening.
    
    Signed-off-by: Daniel Stone <daniel at fooishbar.org>
    Reviewed-by: Peter Hutterer <peter.hutterer at who-t.net>