* libamu/mount_fs.c (print_nfs_args): print nfs_args->addr

* libamu/mount_fs.c (print_nfs_args): print nfs_args->addr
correctly, depending if it's a pointer or not.

* conf/sa_dref/sa_dref_*.h: for each NFS_SA_DREF macro, also
#define NFS_ARGS_T_ADDR_IS_POINTER if nfs_args->addr is a pointer
or an embedded structure, so we can tell how to print it.

* libamu/mount_fs.c (print_nfs_args): print nfs_args->addrlen
field, if it exists.

* configure.in: check for nfs_args->addrlen field.

* wire-test/wire-test.c (main), libamu/mount_fs.c
(print_nfs_args), fixmount/fixmount.c (inetresport,
clnt_create_timeout), amq/pawd.c (transform_dir), amq/amq.c
(main), amd/srvr_nfs.c (find_nfs_srvr), amd/autil.c
(amfs_mount): document that as per POSIX, we don't need to set the
sa_len/sin_len fields in struct sockaddr/sockaddr_in.  The field
is used only internally in the kernel.  See
www.awprofessional.com/articles/article.asp?p=169505&seqNum=2&rl=1

* fixmount/fixmount.c (inetresport): initialize sockaddr_in
structure before filling in some fields.