Fix a regression in passing signal arguments in SignalHook.

Review Request #6580 — Created Nov. 12, 2014 and submitted — Latest diff uploaded

Information

Djblets
release-0.8.x
9fc5767...

Reviewers

The recent sandboxing of SignalHook broke the passing of arguments to
the callback. This fixes that by passing kwargs, and adds a unit test to
ensure it doesn't break again.

Unit tests pass.