context: use "vfs.lstat()" instead of "os.lstat()"
This patch also changes paths added to "rejected" list from full path
(referred by "p") to relative one (referred by "f"), when type of
target path is neither file nor symlink.
This change should be reasonable, because the path added to "rejected"
list is relative one, when "OSError" is raised at "lstat()".
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.