Lynx program name is hard coded

[Uday Reddy]

Kyle Farrell reports (viewmail-info, 2012-07-05):

The vm-mime-display-internal-lynx-text/html does not
honor vm-lynx-program and hardcodes the string "lynx" as the program.
The method in vm-mime.el should be something like:

(defun vm-mime-display-internal-lynx-text/html (start end layout)
  (shell-command-on-region start (1- end)
                           (concat vm-lynx-program " -force_html -dump -pseudo_inlines -stdin")
                           nil t))