GUAC-1164: Do not load "drdynvc" plugin unless actually needed.
GUAC-1164: Do not load "drdynvc" plugin unless actually needed.

apache/guacamole-server,mike-jumper/incubator-guacamole-server,glyptodon/guacamole-server,glyptodon/guacamole-server,apache/guacamole-server,mike-jumper/incubator-guacamole-server,glyptodon/guacamole-server,mike-jumper/incubator-guacamole-server,mike-jumper/incubator-guacamole-server,apache/guacamole-server