GitLab

(rst-transition, rst-adornment): New faces.
(rst-adornment-faces-alist): Make default safe to reevaluate.
Fixes
http://sourceforge.net/tracker/?func=detail&atid=422030&aid=3479603&group_id=38414.
Improve customization tags.
(rst-define-level-faces): Clarify meaning.