[PULL] Fix signal-unsafe logging

[Chase Douglas]

The following changes since commit 9bc53d8cb04af2be3feeebb1b10774c2d599a76b:

  dri2: SProcDRI2Connect - send the response. (2012-05-22 21:19:40 -0700)

are available in the git repository at:

  git://people.freedesktop.org/~cndougla/xserver signal-logging-v5

for you to fetch changes up to 30659c54c72b2d04de1d87c545129a06395c3fa9:

  Log in OsVendorFatalError() in a signal safe manner (2012-05-24 09:52:25 -0700)

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Chase Douglas (16):
      test/touch: Initialize device name
      Add global variable inSignalContext
      Save log file file descriptor for signal context logging
      Add FormatUInt64{,Hex}() for formatting numbers in a signal safe manner
      Add LogMessageVerbSigSafe() for logging messages while in signal context
      Add ErrorSigSafe() alternative to ErrorF()
      Print backtrace in a signal-safe manner
      Make BUG_WARN* signal safe
      Warn when attempting to log in a signal unsafe manner from signal context
      Log messages in GetTouchEvents() in a signal safe manner
      Log messages in TouchBeginDDXTouch() in a signal-safe manner
      Log mieq enqueue overflow in a signal safe manner
      Log safely in fatal signal handler
      Log in UnloadModuleOrDriver() in a signal safe manner
      Log in LoaderUnload() in a signal safe manner
      Log in OsVendorFatalError() in a signal safe manner

 dix/getevents.c                      |    4 +-
 dix/touch.c                          |    5 +-
 hw/xfree86/common/xf86Init.c         |   14 ++--
 hw/xfree86/loader/loader.c           |    2 +-
 hw/xfree86/loader/loadmod.c          |    5 +-
 hw/xfree86/os-support/shared/sigio.c |    4 +
 include/globals.h                    |    3 +
 include/misc.h                       |   10 ++-
 include/os.h                         |   57 ++++++++++++++
 mi/mieq.c                            |   19 +++--
 os/backtrace.c                       |   49 +++++++-----
 os/log.c                             |  143 +++++++++++++++++++++++++++++++++-
 os/osinit.c                          |    8 +-
 os/utils.c                           |   46 +++++++++++
 test/.gitignore                      |    1 +
 test/Makefile.am                     |    3 +-
 test/signal-logging.c                |  115 +++++++++++++++++++++++++++
 test/touch.c                         |    5 ++
 18 files changed, 436 insertions(+), 57 deletions(-)
 create mode 100644 test/signal-logging.c