py3: convert hg executable path to bytes in missing case in procutil
We (Google) noticed this in our tests when we use chg and a hg wrapper
script not called 'hg'. The executable then ended up being a native
string, which then failed in chgserver when trying to convert the
environment dict to a byte string.
Differential Revision: https://phab.mercurial-scm.org/D6775
Mercurial's documentation is kept in reStructuredText format, which is
a simple plain text format that's easy to read and edit:
http://docutils.sourceforge.net/rst.html
It's also convertible to a variety of other formats including standard
UNIX man page format and HTML. You'll need to install Docutils:
http://docutils.sourceforge.net/
Use the Makefile in this directory to generate the man and HTML pages.