GUACAMOLE-485: Disable build of terminal emulator if Pango was manually disabled.
GUACAMOLE-485: Disable build of terminal emulator if Pango was manually disabled.

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