Recognize .rbw and .pyw files (bug#18753)

* lisp/progmodes/python.el (auto-mode-alist):
Recognize .pyw files.

* lisp/progmodes/ruby-mode.el (auto-mode-alist):
Recognize .rbw files.

lisp/progmodes/python.el

@@ -273,7 +273,7 @@
 (autoload 'help-function-arglist "help-fns")
 
 ;;;###autoload
-(add-to-list 'auto-mode-alist (cons (purecopy "\\.py\\'")  'python-mode))
+(add-to-list 'auto-mode-alist (cons (purecopy "\\.pyw?\\'")  'python-mode))
 ;;;###autoload
 (add-to-list 'interpreter-mode-alist (cons (purecopy "python[0-9.]*") 'python-mode))
 

lisp/progmodes/ruby-mode.el

@@ -2259,7 +2259,7 @@ See `font-lock-syntax-table'.")
 ;;;###autoload
 (add-to-list 'auto-mode-alist
              (cons (purecopy (concat "\\(?:\\.\\(?:"
-                                     "rb\\|ru\\|rake\\|thor"
+                                     "rbw?\\|ru\\|rake\\|thor"
                                      "\\|jbuilder\\|rabl\\|gemspec\\|podspec"
                                      "\\)"
                                      "\\|/"