Windows: Test AFS_DBG_FLAG_BREAK_ON_ENTRY earlier

During AFSRedir.sys initialization, check the AFS_DBG_FLAG_BREAK_ON_ENTRY
registry flag before initializing the trace log system.

Reviewed-on: http://gerrit.openafs.org/9622
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 1437789abaf86a6448d7a2d8dc197876ab2a9ea6)

Change-Id: I860fdf4761add55468af2cfe1758bb6dfe275f5a
Reviewed-on: http://gerrit.openafs.org/9627
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Windows: Replace AFSDbgMsgLog func with macro

In order to reduce computation overhead when trace logging is not
active replace the AFSDbgMsgLog function call with a macro,
AFSDbgTrace.

Reviewed-on: http://gerrit.openafs.org/9621
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 19dc2fac408bd619f67c2e7ee29b42c81c1150bc)

Change-Id: I7ebca240a1719f7d75419347c2ea1af6f4a6a6fa
Reviewed-on: http://gerrit.openafs.org/9628
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>