tcpwrappers: Use xlog() instead of perror(3) and syslog(2)
Clean up: Replace calls to syslog(2) and perror(3) in from_local.c
with calls to xlog(). The problems displayed by the perror(3) calls
especially should be reported. Currently they are never seen in the
system log.
As part of a build test, I defined TEST, and found a couple of
problems with main(), which are also addressed in this patch.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>