David R Bacon <dbacon@cis.ksu.edu> Fixes to compile on x86_64.
Billy Biggs <vektor@dumbterm.net> Fix to use stdint datatypes.
Dave Beckett <Dave.Beckett@bristol.ac.uk> Combined libpixregion, libic, and slim.
Jakub Bogusz <qboosh@pld-linux.org> Fixes for 64-bit machines.
Anders Carlsson <andersca@gnome.org> Build fixes. New accessor functions.
Richard Henderson <rth@twiddle.net> "slim" macros for better shared libraries 
Owen Taylor <otaylor@redhat.com> Support for both transform and repeat
Keith Packard <keithp@keithp.com> The original implementation of the compositing code.
David Reveman <c99drn@cs.umu.se> Byte-order, clipping and format fixes.
Vladimir Vukicevic <vladimir@pobox.com> Bug fix.
Bryan Worth <bryan@theworths.org> Cleanups to not depend on X header files.
Carl Worth <carl@theworths.org> General maintenance. Original port from X server code.
Richard Worth <richard@theworths.org> Build fixes for cygwin.

and the "X Window System authors" (pixregion code)

(Please let us know if we have missed anyone. I would be interested in
having more precise attribution for the pixregion code if anyone knows
who wrote that.)