sshserver: drop ancient do_{lock,unlock,addchangegroup} methods These were marked as deprecated and dangerous way back in e8c4f3d3df8c, which was first included in Mercurial 0.9.1. While it's possible that clients from that long ago are still around somewhere, they're risky for servers in that they want to lock the repo, and then might leave it locked if they died before finishing their transaction. Given that it's been 9 years, let's go ahead and cut this last lingering tie with a basically-untested protocol.

wireproto: add config knob for http header length limit Well-behaved Mercurial clients will respect the httpheader capability by not sending http headers longer than the given limit in bytes. The limit is currently hard-coded at 1024 bytes, a safe value for any web server. Since parsing headers is a notable factor in web server performance, tuning header size can nontrivially improve performance for request-heavy operations (eg. obsolete marker negotiation). Exposing the maximum header length limit as a configuration setting is a simple way to enable such tuning.

archive: fix changesincelatesttag with wdir()

revset: fix a crash in parents() when 'wdir()' is in the set The crash was "TypeError: expected string or Unicode object, NoneType found" down in revlog.parentrevs(). This fixes heads() too (which is where I found it.)

workingctx: don't report the tags for its parents This fixes the bad distance calculation for '{latesttagdistance}' mentioned in the previous patch.

hgweb: don't try to show repo on repo-not-found page in monoblue

hgweb: fix help pages title in gitweb and monoblue Help pages in gitweb and monoblue were setting a completely inappropriate title: "Branches". Let's have a proper title (copy-pasted from paper style).

hgweb: don't show summary link as active on error pages in monoblue These two error pages in monoblue think they are the summary page, when they clearly aren't.

identify: build the tag list directly instead of using wctx.tags() The current implementation of workingctx.tags() returns the tags of the parents. This causes the calculation of {lastesttagdistance} from wdir() to be wrong. The value when updated to a tag is 0, but updated to the tag's child is 2, the child of that 3, and so on. This prepares for workingctx.tags() to not report the parent tags.

identify: avoid a crash when given '-r wdir()' The crash was 'NoneType is not subscriptable' in hexfunc(ctx.node()), because the node for wdir() is None. This can be avoided simply by detecting 'wdir()' and taking the existing path for no given revision.