log speedup: set quiet/verbose/debugflag in the fake ui object

log speedup: use only ui.write in changeset_printer.show - ui.status is not very useful, since this code is never executed when ui.quiet is true. - explicitly checking for ui.debug allows a regular hg log to run without looking at the manifest index - the calls to ui.note were converted for consistency

log speedup: walkchangerevs: filter the files only if we need them This speeds up hg log and significantly reduces memory usage (max RSS goes from ~92MB to ~21MB on the kernel repo), since we no longer store all the revisions in the cache.

Inform the user about the new URL when being redirected via http. Additionally the changed code ensures that the new URL is used, even if it doesn't end with the query string.

Stripping of query string (since 88b4755fa48f) stripped too much (issue327) rstrip(qs) not only strips qs from the right, but it continues stripping every char at the end of the URL that occurs on qs.

Merge with upstream

Turn bundle file into a string for http push, for urllib2 over proxies.

Force the content-length header to be a string in httprepo.unbundle. (Needed for Python2.3 compatibility)

Use the new UnexpectedOutput exception in httprepo, too.

New UnexpectedOutput exception to catch server errors in localrepo.stream_in If the unexpected is a string, the empty string will be mentioned, and long strings are cut to at most 400 chars.