Bug-fix: We should use HYDU_FUNC instead of __func__ directly.  We
already checked for this, but accidentally used __func__ directly
after the check.

Reviewed by dinan.
Fix typo -- the performance tests were not correctly disabled in
released versions.

Reviewed by dinan.
Fix English typos caught by the Debian lintian checks.

Reviewed by dinan.
Added the per-communicator thresholds addition into the CHANGES file.

No reviewer.