Windows: Move grmutex, etc. to afspthread.dll

afsauthent.dll exported:

  pthread_recursive_mutex_lock
  pthread_recursive_mutex_unlock
  grmutex (DATA)

even though a dedicated afspthread.dll existed and all pthreaded
modules must link to afspthread.dll and not all link to
afsauthent.dll.  Move these functions and the global mutex variable
to afspthread.dll to ensure that only one instance of the variable
is present in any binary.

Also remove from src/libafsauthent/NTMakefile the local building
of src/util object files and link to mtafsutil.lib.

Reviewed-on: http://gerrit.openafs.org/9303
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit d6cfcf46a8f3ec03e2f805aca6e5012eb6633803)

Change-Id: I5ffcf4b6f0cea9cfbca2f01927e477a72292a0d1
Reviewed-on: http://gerrit.openafs.org/9304
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Windows: Remove RXAFS* from afsrpc.dll

afsrpc.dll is supposed to be the multi-threaded dynamic loadable
version of the RX package.  It has also included the RXAFS and
RXAFSCB client functions from src/fsint.  Including the RXAFS* is
nice in theory but in practice the afsd_service.exe must link to
afsint.lib anyway in order to obtain access to RXAFSCB_ExecuteRequest()
which is part of the server portion.  Linking to both results in
multiple instances of the same symbols in which case afsint.lib
must be linked to first and the dynamic version of the functions
are ignored.

The only other module that used RXAFS* functions from afsrpc.dll
is the adminutil library from the libadmin package.  adminutil
doesn't implement the server functions but it can just as easily
link against afsint.lib.

Removing RXAFS* from afsrpc.dll results in a library that only
contains RX, RXSTATS, core xdr and rxkad.

This patchset also fixes some minor bugs:

 1. $(UTILOBJS) were not being linked to the library due to
    a typo.

 2. Always use multi-thread safe versions of afsutil.lib

Reviewed-on: http://gerrit.openafs.org/9300
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit e2ef4ce23d0cd0eddadfb39a39a29593093f0b6f)

Change-Id: I68d0655a6f8a7b22003ee0fbbc2045dffe21bb1d
Reviewed-on: http://gerrit.openafs.org/9305
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>