libnettle from home:frispete:15.2:samba project

需要 openSUSE Leap 15.2 ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:frispete:15.2:samba/openSUSE_Leap_15.2/home:frispete:15.2:samba.repo
zypper refresh
zypper install libnettle