Log Message:
Update to version 1.0.20.

pkgsrc changes:
 o move to bsd.options.mk framework
 o add ldap options

package changes:
 o On MacOS X Panther and Tiger, clients were sometimes rejected when they
   has no reverse DNS entry and DNS resolution was enabled. This has been
   fixed.  Thanks to Yann Thomas Gerard <inside@parasiterecords.com> .
 o The command-line parser was broken on FreeBSD and Solaris in version
   1.0.19. This has also been fixed.