evolve: detect unresolved conflict during evolve --continue (issue5966)
Evolve --continue was ignoring unresolved conflict, proceeding with its
operation without any check. This is now fixed.
This test case was built and formalized by Matt Harbison and Anton Shestakov.
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/