Fix some doc-strings in frame.c (Bug#18789).

* frame.c (Fset_frame_height, Fset_frame_width, Fset_frame_size)
(frame_resize_pixelwise, frame_inhibit_implied_resize): Fix
doc-strings (Bug#18789).
* lisp/emacs-lisp/bytecomp.el (byte-compile--use-old-handlers): Change default.