Make boldness and italicness affect subsequently created frames.

Make boldness and italicness affect subsequently created frames.
(make-face-bold, make-face-italic, make-face-bold-italic)
(make-face-unbold, make-face-unitalic): Update global-face-data.
Ignore a list found in the font slot.
(make-face-bold-internal, make-face-italic-internal):
(make-face-bold-italic-internal): New subroutines.
(x-create-frame-with-faces): If global-face-data's font slot
indicates bold and/or italic, make it so.