compat-test: merge with stable * Blackbox format seems to have change when displaying config CLI options. * As obsfate template is now only compatible with hg 4.2+, remove all references to it in test files.

syntax: re
/figures/[^/]+\.png$
^html/
\.pyc$
~$
\.swp$
\.orig$
\.rej$
\.err$
^tests/easy_run.sh$
^build/
^dist/
^MANIFEST$
^docs/tutorials/.*\.rst$
\.ico$
tests/\.testtimes