templates: shorten definition of changeset labels in command-line style We'll add more labels and the line is already quite long, so let's define a variable to hold all evolution "troubles" labels.

templates: use separate() to build changeset labels in command-line style

templatekw: add an "obsolete" keyword Definition is the same as the one in evolve extension.

cmdutil: add a "changeset.obsolete" label in changeset_printer Until now there were no label to highlight obsolete changesets in log output, only evolution troubles (unstable, bumped, divergent) are supported. We add a "changeset.obsolete" label on changeset entries produced by changeset_printer so that obsolete changesets can be highlighted in log output. This is useful because, unless using a graph log where obsolete changesets have a 'x' marker, there's no way to identify obsolete changesets. And even in graph mode, when working directory's parent is obsolete, we get a '@' marker and we do not see it as obsolete.