hgweb: apply websub filter to the changeset description in rss and atom feeds For example, this is useful for linking from the feed reader to a bug tracker. This follows the existing pattern used within the hgweb templates. With the exception of the raw style, all usages of the changeset "desc" keyword are now followed by either the "firstline" filter or the "websub" filter. When "websub" is used, it always follows the "escape" filter.

tests: write the hgrc file for test-hgweb-commands.t with cat instead of echo To improve the readability.

tests: tests for the rss feeds This matches the existing tests for the atom feeds.

localrepo: use _matchstatus of context objects Now that we have the machinery in place, we call the context method for changing the match object in the case of comparing the working directory with its parent. This removes the last of the hard-coded workingctx knowledge in localrepo paving the way for us to remove localrepo.status completely.

workingctx: override _matchstatus for parentworking case This patch encapsulate the logic for changing the match.bad function when comparing against the working directory's parent. Future patches will remove more of the 'if ... else' blocks in localrepo.status that test for this working directory parent case.

basectx: add _matchstatus method for factoring out last of parentworking logic This patch paves the way to allow a workingctx to override the match object with a custom 'bad' method for cases where status is sent a directory pattern.