tests: update output for shorted prompts from Mercurial
This makes tests pass again after Mercurial commits 4764e8436b2a
(filemerge: make last line of prompts <40 english chars (issue6158),
2019-06-20)
CORE-TEST-OUTPUT-UPDATE: 4764e8436b2a
syntax: re
/figures/[^/]+\.png$
^html/
\.pyc$
~$
\.swp$
\.orig$
\.rej$
^tests/.*\.err$
^tests/easy_run.sh$
^build/
^dist/
^MANIFEST$
^docs/tutorials/.*\.rst$
\.ico$
tests/\.testtimes
^docs/training/graphs/
^docs/training/html/
^docs/training/index.html
^docs/training/graphviz-images/
^docs/training/img/
^docs/training/output/
^docs/training/pandocfilters/