Adapt compile.el to changes in MSVC diagnostics format.

Adapt compile.el to changes in MSVC diagnostics format.

 lisp/progmodes/compile.el (compilation-error-regexp-alist-alist):
 Adjust the msft regexp to the output of Studio 2010, and move msft
 before edg-1.  See the discussion on emacs-devel,
 http://lists.gnu.org/archive/html/emacs-devel/2012-09/msg00579.html,
 for the details.

 etc/compilation.txt (msft): Add error messages in new Studio 2010
 format.

 test/automated/compile-tests.el (compile-tests--test-regexps-data):
 Add data for msft's new format.