* utils/showmount/showmount.c (main): Don't assume that strings
starting with digits are IP addresses.
* utils/nfsd/nfsd.c (main): Close all fds and reopen 0,1,2 on
/dev/null before nfssvc(). Use syslog to report nfssvc errors.
* support/misc/tcpwrapper.c, utils/mountd/mountd.man,
utils/rquotad/rquotad.man, utils/statd/statd.man: Fix comments and
man pages: We check host names *and* addresses with tcpwrappers.