add an autoload to systemtap-mode.el

[Tom Tromey]

This adds another autoload to systemtap-mode.el, to bring it roughly
(the regexps differ unimportantly) into sync with systemtap-init.el.

Note that if you are a package.el user, you can install
systemtap-mode.el directly and you don't need systemtap-init.el at all.

Tom

diff --git a/emacs/systemtap-mode.el b/emacs/systemtap-mode.el
index 759b567..cdcd655 100644
--- a/emacs/systemtap-mode.el
+++ b/emacs/systemtap-mode.el
@@ -150,6 +150,9 @@
 ;;;###autoload
 (add-to-list 'auto-mode-alist '("\\.stp\\'" . systemtap-mode))
 
+;;;###autoload
+(add-to-list 'auto-mode-alist '("\\.stpm\\'" . systemtap-mode))
+
 (require 'simple)
 
 ;;;###autoload