Merge from origin/emacs-24

Merge from origin/emacs-24

9664def Signal a file-error from directory-files on MS-Windows  (Bug#19701)
fd4e65e Added missing test for previous commit
5485e3e5 python.el: New non-global state dependent indentation engine.
3b23e6a Fix the description of --insert command-line option  (Bug#19694)
7a7e594 Add a cross-reference in ELisp manual.  (Bug#19668)
b4f4075 Fixes: debbugs:19660
83b3c31 * test/automated/regexp-tests.el: Require regexp-opt

Conflicts:
	lisp/progmodes/python.el