addremove: add "ui." prefix to message color keys I don't like fully-colorized status/warning messages, and I want to disable them at all. If we'd supported a syntax like 'color.ui.*=none', I could easily turn addremove.added/removed off as well as ui.error. This patch is just for that. Since addremove colors aren't released yet, which were added at ddc1da134772, there are no compatibility concerns.

To run the tests, do:

cd tests/
python run-tests.py

See https://mercurial-scm.org/wiki/WritingTests for
more information on writing tests.