sslutil: display a better error message when CA file loading fails Before, sslcontext.load_verify_locations() would raise a ssl.SSLError which would be caught further up the stack and converted to a urlerror. By that time, we lost track of what actually errored. Trapping the error here gives users a slightly more actionable error message. The behavior between Python <2.7.9 and Python 2.7.9+ differs. This is because our fake SSLContext class installed on <2.7.9 doesn't actually do anything during load_verify_locations: it defers actions until wrap_socket() time. Unfortunately, a number of errors can occur at wrap_socket() time and we're unable to ascertain what the root cause is. But that shouldn't stop us from providing better error messages to people running a modern and secure Python version.

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.