Revert part of revision 1.10, as it broke portmap lookups for IPv4 TCP clients. The problem was that a struct netconfig returned by getnetconfigent() was being treated as a handle for __rpc_getconf(), which certainly isn't right.
Revert part of revision 1.10, as it broke portmap lookups for IPv4
TCP clients. The problem was that a struct netconfig returned by
getnetconfigent() was being treated as a handle for __rpc_getconf(),
which certainly isn't right.

The tirpc-99 code uses __rpc_setconf("udp")/__rpc_getconf() to find
the IPv4 udp netconfig, but our implementation of these functions
seem happy to return IPv6 entries, so we can't use them. By reverting
to the old version, we are hard-coding the name of the udp4 netid.

Tracked down by:	Bakul Shah <bakul@bitblocks.com>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase