sysutils/zap: Update to version 0.6.4.
- Fix issues with replication.
- Do not require all '-r dataset' arguments to be listed first.
- Fix error checking. If only one argument to 'zap rep' was supplied, replication would silently fail. This required breaking the interface. Instead of zap rep|replicate [-dLSv] [[-r dataset]... [dataset]... remote_dest] the format is now zap rep|replicate [-dLSv] [remote_dest [-r] dataset [[-r] dataset]...].
- Fix issue with destroy.
- In 0.6.3 $zptn was updated to be an extended regular expression, but when a host was not supplied as an argument, grep was being called with a basic regular expression.
- In 'zap snap', do not require all '-r dataset' arguments to be listed first.