split: use ui.configoverride to preserve phase while commiting
As we need to preserve the phase of revision which is going to be
splitted into multiple revision. This patch use ui.configoverrides
to temporarily overwrite the phases.new-commit config option at the
time of committing a new node.
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/