MFH: r542085

databases/mariadb104-server: Fix breakage

• Unbreak clean installs (USERS/GROUPS)
• INSTALL_UNIX_ADDRDIR is a FILE, add the socket filename
• Built-in socket path now confirmed to be consistent between client, lib and daemon

PR: 247747
Submitted by: VVD <vvd unislabs com>
Reported by: dinoex

Approved by: ports-secteam (joneum)