Patrick Mezard <patrick@mezard.eu> [Wed, 22 Feb 2012 12:30:15 +0100] rev 16147
graphlog: explicitely join multivalue parameters
This will let use override the "join" value (and/or) depending on the option
considered. The option revset arity is now deduced from the revset and the
option value type, to simplify opt2revset definition.