security/libpki: new location for sample files
- not install any configuration files AT ALL
- put all provided samples in ${PREFIX}/share/libpki/etc
- add a message to the user to refer to these samples
- mark the port as BROKEN on arm64 (according to pullout message received)
- add options to allow configure to enable DNS, LDAP, MySQL and PostgreSQL if asked for
- bump PORTREVISION
PR: 265189