help: document weird behavior of uisetup()
While refactoring ui.log() API, it was really annoying that uisetup() is
actually an extsetup() the phase 1. Let's document that. I'm planning to
add another uisetup() which is called per ui instance, though I can't think
of a good name for it.
Mercurial
=========
Mercurial is a fast, easy to use, distributed revision control tool
for software developers.
Basic install::
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
Running without installing::
$ make local # build for inplace usage
$ ./hg --version # should show the latest version
See https://mercurial-scm.org/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.