Windows: cm_AddCellProc always call cm_NewServer

The current implementation of cm_NewServer handles races and
collisions.  There is no need to perform a cm_FindServer() check
first.  Just call cm_NewServer() for all server entries.

Move the logging of server creation and cell assignment to
cm_NewServer().

Reviewed-on: http://gerrit.openafs.org/10775
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit dd9e59805b37a93f0f64c67cfa3ba4d80f1f358c)

Change-Id: Icc1ad30026100fd33da488282f03b999fc259183
Reviewed-on: http://gerrit.openafs.org/10825
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Windows: Support arbitrary callback ports

Reconfigure the advanced firewall to support callback ports
other than port 7001.

This changes the semantics of the afsicf api.  AFS_PORTSET_SERVER is now
zero.  Any other value is treated as a callback port.

Reviewed-on: http://gerrit.openafs.org/10776
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 7760acc4570a306390f0b7e5acf4b21e8a8cc90d)

Change-Id: I86cf09a6a9136f0acf53a2449e47898c5ff435d4
Reviewed-on: http://gerrit.openafs.org/10826
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>