Log Message:
libxcb: update to 1.16.

Alan Coopersmith (4):
      gitlab CI: add a basic build test
      configure.ac: drop dependency `pthread-stubs` on Solaris
      configure.ac: Remove obsolete AC_HEADER_STDC
      Raise minimum required version of Python from 2.6 to 3.0

Daniel G (2):
      Fix windows build.
      Fix indentation.

Demi Marie Obenour (5):
      Fix a compiler warning
      Fix handling of documented enum parameters
      Allow full paths to sockets on non-macOS
      DISPLAY starting with / or unix: is always a socket path
      Add tests for unix socket parsing

Emil Velikov (1):
      autogen.sh: use quoted string variables

Ilya Pominov (1):
      c_client: Fix crash in xcb_randr_set_monitor

Jan Beich (1):
      configure.ac: drop `pthread-stubs` dependency on DragonFly and FreeBSD

Jeremy Huddleston Sequoia (1):
      xcb_conn: Add a check for NULL to silence a UBSan runtime error

Matt Turner (2):
      configure.ac: Require xcb-proto >= 1.16.0
      libxcb 1.16

Matthieu Herrb (1):
      Fix xcb_connect() call with a custom xcb_auth_info_t

Mihail Konev (1):
      autogen: add default patch prefix

Mike Sharov (2):
      Build DOUBLE-BUFFER extension.
      Require xcb-proto >= 1.15.1, which has Dbe

PaperChalice (1):
      configure.ac: drop dependency `pthread-stubs` on macOS

Peter Hutterer (1):
      autogen.sh: use exec instead of waiting for configure to finish

Uli Schlachter (1):
      Improve tutorial example