[PATCH] Refactoring of dixutils.c

[Fernando Carrijo]

So, here is the result of my preliminary attempt to bring some order to dix. The
refactoring of the messy dixutils.c into more cohesive files sounded like a good
oportunity for me to experiment with the code, and that's what the following
statistics are about:

   [PATCH 1/7] dix: Extract blockhandler.c from within dixutils.c
   [PATCH 2/7] dix: Extract callback.c from within dixutils.c
   [PATCH 3/7] dix: Extract lookup.c from within dixutils.c
   [PATCH 4/7] dix: Extract sleepqueue.c from within dixutils.c
   [PATCH 5/7] dix: Extract workqueue.c from within dixutils.c
   [PATCH 6/7] dix: dixutils.c doesn't need those headers anymore. Remove them.
   [PATCH 7/7] dix: Cleanup dix.h to match the refactoring suffered by dixutils.c

   dix/Makefile.am    |    7 +-
   dix/blockhandler.c |  233 +++++++++++++++++++
   dix/callback.c     |  322 ++++++++++++++++++++++++++
   dix/dixutils.c     |  643 ----------------------------------------------------
   dix/lookup.c       |  183 +++++++++++++++
   dix/sleepqueue.c   |  173 ++++++++++++++
   dix/workqueue.c    |  166 ++++++++++++++
   include/dix.h      |   51 +++--
   8 files changed, 1111 insertions(+), 667 deletions(-)

This patch series adds no functional changes to dix whatsoever, and the mismatch
between the number of lines added and removed can be explained by the replication
of copyright messages in the newly created files.