- Added mariadb-# to load_default_groups to all mariadb-# scripts and
  mariadb-binaries.
- Added mariadbd and mariadbd-"version" to load_default_groups for the
  mysqld/mariadb server
- Added mariadb-client to load_default_groups for the mysql/mariadb client

Other things
- Ignored mysql-test/lib/My/SafeProcess/wsrep_check_version
- mysql_install_db will now automatically detect if run from srcdir