templatekw: convert list of key/value pairs to sortdict
These sortdict objects will be passed to _hybrid later, which will allow
us to handle them by "ifcontains()" and "get()" as expected.
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.