rewrite: use cmdutil.logmessage instead of ad-hoc methods
The logic for handling the --message and --logfile options is already
in core hg in the cmdutil.logmessage function. This patch removes this
duplicate logic from Evolve and just calls the core function.
recursive-include docs/figures *.svg
include docs/figures/hgview-example.png
include docs/*.rst
include docs/*.py
include docs/tutorials/*.t
include docs/makefile
include docs/static/*.svg
include hgext/__init__.py
include hgext/evolve.py
include hgext/pushexperiment.py
include setup.py
include README
include COPYING
include tests/*.t
include tests/*.py
exclude tests/test-oldconvert.t
exclude tests/test-qsync.t