hgext3rd/__init__.py

simplestore: shore up lookup errors

When revisions or nodes can't be resolved, we're expected to raise
an error.LookupError. When I ported code from revlog.py, I failed
to realize that "LookupError" in that module is aliased to
error.LookupError. I thought we were using the builtin LookupError
instead.

This commit switches us to error.LookupError. It also fixes
rev() to raise error.LookupError instead of KeyError.

Differential Revision: https://phab.mercurial-scm.org/D3092

# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)