FreeBSD Port: bind9-9.2.3 old nsupdate persists when PORT_REPLACES_BASE_BIND9 is used (fix included)

[James Saint-Rossy, Thomas]

First thanks for maintaining the port it's a staple for me here and your hard
work is appreciated.

I noticed when install with the PORT_REPLACES_BASE_BIND9 that installs
/usr/bin/nsupdate but leaved /usr/sbin/nsupdate.  This caused some confusion
recently because the base nsupdate doesn't understand the "zone" command.  I've
included a patch that renames the old nsupdate to nsupdate.old.

Thanks again, James Saint-Rossy.

*** Makefile.orig       Mon Feb 23 17:27:21 2004
--- Makefile    Mon Feb 23 18:00:30 2004
***************
*** 104,109 ****
--- 104,113 ----
                ${WRKSRC}/README ${DOCSDIR}/
  .endif

+ .if defined(PORT_REPLACES_BASE_BIND9)
+       ${MV} /usr/sbin/nsupdate /usr/sbin/nsupdate.old
+ .endif
+
        @${CAT} ${PKGMESSAGE}

  .include <bsd.port.mk>