next: make next command --evolve by default
Before this patch, if we need to evolve to update to the next child,
we were suggesting the user to use --evolve flag. This patch make some
changes to evolve by default in that conditions.
After making next command to evolve by default we have to consider
the following points:
1) If we don't need to evolve while updating to the next child:
a) And if wdir is dirty, we suggest to use --merge flag
b) if wdir is clean, we simply update to next child (if ambiguous,
prompt the user to select one)
2) If we need to evolve:
a) when wdir is dirty, we suggest the user to use `hg shelve` first,
to make wdir clean. As we don't support --merge while evovling.
b) when wdir is clean, we evolve the next cset.
Changes made in test-prev-next.t reflect the changed behaviour.
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/