Windows: Fix port assignment to use network byte order

Windows: Fix port assignment to use network byte order

Service port numbers are stored within sockaddr* structures
and returned by afsconf_FindService() in network byte order.
getAFSServer() and afsconf_GetAfsdbInfo() accept and return
service port numbers in network byte order.

When processing the special case for 7002 and 7003 in
afsconf_GetAfsdbInfo(), the comparisons must consistently
use network byte order.

When assigning port numbers for AFSDB lookups, getAFSServer()
must use network byte order.

Document the use of network byte order for each variable.

LICENSE MIT

Change-Id: I2163826e8a234a1d19474b2eba3d36335ba12afb
Reviewed-on: http://gerrit.openafs.org/830
Tested-by: Jeffrey Altman <jaltman@openafs.org>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>