url: really handle urls of the form file:///c:/foo/bar/ correctly
28edd65000d9 made sure that paths that seemed to start with a windows drive
letter would not get an extra leading slash.
localpath should thus not try to handle this case by removing a leading slash,
and this special handling is thus removed.
(The localpath handling of this case was wrong anyway, because paths that look
like they start with a windows drive letter can't have a leading slash.)
A quick verification of this is to run 'hg id file:///c:/foo/bar/'.
wireproto: add out-of-band error class to allow remote repo to report errors
Older clients will still print the provided error message and not much else:
over ssh, this will be each line prefixed with 'remote: ' in addition to an
"abort: unexpected response: '\n'"; over http, this will be the '---%<---'
banners in addition to the 'does not appear to be a repository' message.
Currently, clients with this patch will display 'abort: remote error:\n' and
the provided error text, but it is trivial to style the error text however is
deemed appropriate.
windows: fix pyflakes warning on unused imports
This is ugly, but only marginally uglier than before, and it avoids
hacking/disabling our pyflakes test