run-tests: fix permission to clean up unreadable directories I found many hgtests.* directories left in $TMPDIR, which couldn't be deleted because test-ssh-repoerror.t created some directories with a-rx mode.

context: reimplement memfilectx.cmp() If I added a sanity check to basefilectx, test-context.py exploded. This patch copies the naive implementation from overlayworkingfilectx.

windows: ensure pure posixfile fd doesn't escape by entering context manager There are tests in test-revlog-mmapindex.t and test-rebase-mq-skip.t that are fixed by this, but we usually don't use --pure on Windows. For whatever reason, the remaining --pure failures are various errors like $ENOTDIR$ and "Access is denied" have a trailing '.'.

vfs: ensure closewrapbase fh doesn't escape by entering context manager I'm not sure if there's a problem in practice here, as there's no test failure either way. The __exit__() and close() methods raise an exception, so maybe __exit__() and close() are being called directly on the underlying handle when delayclosedfile is used on a context manager? I doubt that was intended.

windows: ensure mixedfilemodewrapper fd doesn't escape by entering context mgr Otherwise it seems that the special read and write handling would be bypassed.

py3: ensure the proxied Windows fd doesn't escape by entering context manager The purpose of the proxy class is to provide the `name` attribute which contains the file path. But in tests that used a context manager, it still blew up complaining that 'int' doesn't have a 'startswith' function.

test: fix test-http-bad-server with current python 2.7 https://github.com/python/cpython/pull/2825 changed the exception message for empty http status line. Differential Revision: https://phab.mercurial-scm.org/D5412

hgweb: register web.comparisoncontext to the config table This was caught in some server side logging added to debug py3 issues.

Added signature for changeset 1c8c54cf9725

Added tag 4.8.1 for changeset 1c8c54cf9725