Notable changes:
* simple.el (count-words): If called from Lisp, return the word
count, for symmetry with `count-lines'. Arglist changed.
* faces.el (face-spec-reset-face): For the default face, reset the
attributes to default values (Bug#10748).
* mail/emacsbug.el (report-emacs-bug-hook): Fix up thinko in
previous patch: Check `message-send-mail-function', and not the
default function (bug#10897).
* cus-start.el: Make x-select-enable-clipboard-manager
customizable.
* Depessimize the handling of very large macros.