tests: add test for empty CA certs file smf reported that an environment with no loaded CA certs resulted in a weird error. I'd like to detect this a bit better so we can display an actionable error message. The actual error being globbed over in this patch is "unknown error" with a ssl.c line number. That isn't useful at all.

internals: move the bitmanipulation routines into its own file This is to allow more flexibility with the C sources -- now the bitmanipulation routines can be safely imported without importing Python.h

journal: new experimental extension Records bookmark locations and shows you where bookmarks were located in the past. This is the first in a planned series of locations to be recorded; a future patch will add working copy (dirstate) tracking, and remote bookmarks will be supported as well, so the journal storage format should be fairly generic to support those use-cases.

httpclient: update to 54868ef054d2 of httpplus As of that revision, httpplus fully supports Python 3, including mimicing all the subtle behavior changes around headers in Python 3's http.client.

revset: check invalid function syntax "func-name"() explicitly Before the error was caught at func() as an unknown identifier, and the optimizer failed to detect the syntax error. This patch introduces getsymbol() helper to ensure that a string is not allowed as a function name.

chg: silence warning of unused parameter 'sig'

hgweb: reindent atom/changelogentry.tmpl It was mixing tabs and spaces, and not in a good way. Indent style of other atom entries seems to be 1 space per level, so let's apply it here as well.

hgweb: remove unused/nonexistent filelogentry from atom/map filelog in atom style uses changelogentry to show commits, and atom/filelogentry.tmpl doesn't even exist.

hgweb: remove unnecessary CDATA markup in atom/branchentry.tmpl Since content is of type "text" (and is already escaped), using a CDATA section is not required. Looks like this was just an artifact of copying things from rss style in add2f9ddcfb5, because other entries in atom style don't use CDATA in such places.

hgweb: reindent rss/changelogentry.tmpl It was mixing tabs and spaces, and not in a good way. Indent style of other rss entries seems to be 4 spaces per level, so let's apply it here as well.