make build options more similar to official MariaDB build, i.e. enable XtraDB by default etc.

Conflicts:

	component/mariadb/buildout.cfg

component/mariadb/buildout.cfg

@@ -46,7 +46,6 @@ configure-options =
   --with-plugins=max-no-ndb
   --with-aria-tmp-tables
   --without-plugin-innodb_plugin
-  --without-plugin-oqgraph
   --without-readline
   --with-ssl
   --with-libevent=${libevent:location}