notify: send changesets on 'outgoing' hook, updated doc

sslutil: Restore missing imports of socket and httplib to sslutil Two imports were omitted in the restructure of the code creating sslutil.py, socket and httplib are required when the 'ssl' module cannot be imported, restoring these imports allows mercurial to run on python2.4+2.5.

dispatch: assign I/O descriptors from the request to the ui

ui: use I/O descriptors internally and as a result: - fix webproto to redirect the ui descriptors instead of sys.stdout/err - fix sshserver to use the ui descriptors

dispatch: add I/O descriptors to the request

ui: add I/O descriptors

import: add --bypass option This feature is more a way to test patching without a working directory than something people asked about. Adding a --rev option to specify the parent patch revision would make it a little more useful. What this change introduces is patch.repobackend class which let patches be applied against repository revisions. The caller must supply a filestore object to receive patched content, which can be turned into a memctx with patch.makememctx() helper.

import: separate parents selection from working dir update This will be useful when patching without updating the dirstate