httppeer: properly gate debug usage behind debug flag check
The "dbg" local variable is only defined if the 'debugflag' is set to True.
However, it was used indiscriminately later in the function. We hide its usage
behind the 'debugflag' value to avoid raising a NameError.
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.