Windows: Add IOCTL_AFS_GET_REPARSE_POLICY

Introduce IOCTL_AFS_GET_REPARSE_POLICY to permit the global
and active authgroup reparse point policies to be queried.

Change-Id: I9ec4bfd177cac1a4ed77f3b376694ec6864a479c
Reviewed-on: http://gerrit.openafs.org/9797
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>
Windows: IOCTL_AFS_GET_DEBUG_TRACE

Pemrit the active Debug Flags and Trace Configuration to be
queried by administrators.

Change-Id: I0c798bd2eb8f2445c81a0b45c112bbaf72d15522
Reviewed-on: http://gerrit.openafs.org/9798
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>