Log Message:
Version 4.8.1:
* improved rate limiting to allow per-host limits.
* ftp: make prefer-epsv default "no".
* ftp: fixed quote command and ftp:use-stat-for-list setting.
* switched to libidn2.
* fixed build with LibreSSL.
* fixed configure --disable-rpath.
* fixed coredump when a parent directory was deleted.