Release 4.9.2
- mkdir: fixed exit code with -f option.
- ftp: made ftp:use-pret setting tri-boolean.
- get/mget/put/mput: don't try next files after error if cmd:fail-exit is true.
- get/mget: fixed -O option with remote URL and xfer:use-temp-file being true.
- mirror: disallow empty patterns; don't delete "..".
- mirror: fixed --on-change with --reverse.