changegroup: don't run changegroup hooks if nodes are gone
The changegroup hook runs when the repo lock is released, but it's possible that
multiple transactions have happened during that single lock and therefore the
commits the hook was for may be gone. This is the case in the shelve extension
where it adds a commit and strips it in the same lock but different
transactions (which results in warning messages during unshelve on hgsubversion
repos).
A real fix would be to attach the hook to the transaction instead, but that
might have unknown consequences. Since we're this close to code-freeze, this fix
just prevents the hook from running if the commit disappeared.
shelve: make no_backup parameter passing python 2.4 compatible
Python 2.4 doesn't allow passing named parameter after an list unpack,
but allows to unpack a dict.
ui: send password prompts to stderr again (
issue4056)
test: make test-propertycache.py python2.4 compatible
The subprocess module have not `check_call` method in python2.4. Fall back to
calling `check` with return code verification.
hgweb: log headers only if headers were successfully parsed
The headers attribute is not initialized in certain error situations
(e.g. http 400 bad request). Check for self.headers before we attempt
to access it.
patch: Fix nullid for binary git diffs (
issue4054)
The index for an empty file in git is not 0, but sha-1("blobl 0\0").