[RFC] Refactoring of dix/dixutils.c

[Fernando Carrijo]

My humble attempt to put some order in dix. For lack of inspiration
(or knowledge, if you prefer) I didn't touch the original copyright
notices, and simply copied them verbatim to the new files; exactly
like I did to headers. Ugly, I presume. But just a first try.

Do people see any value in things like these?

--
 dix/Makefile.am    |    7 +-
 dix/blockhandler.c |  243 ++++++++++++++++++++
 dix/callback.c     |  333 +++++++++++++++++++++++++++
 dix/dixutils.c     |  634 ----------------------------------------------------
 dix/lookup.c       |  190 ++++++++++++++++
 dix/sleepqueue.c   |  184 +++++++++++++++
 dix/workqueue.c    |  176 +++++++++++++++
 7 files changed, 1132 insertions(+), 635 deletions(-)