Speed up by storing frame faces in hash tables instead of alists

Speed up by storing frame faces in hash tables instead of alists

* src/frame.h (struct frame): Add face_hash_table, remove face_alist.
(fset_face_hash_table): New function.
(fset_face_alist): Remove.
* src/frame.c (make_frame): Initialize f->face_hash_table.
(Fmake_terminal_frame): Update to work with hash tables instead of
alists.
* src/xfaces.c (lface_from_face_name_no_resolve):
(Finternal_make_lisp_face):
(update_face_from_frame_parameter): Update to work with hash tables
instead of alists.
(Fframe_face_hash_table): New function.
(Fframe_face_alist): Move to faces.el as frame-face-alist.
(syms_of_xfaces): Add frame_face_hash_table.

* lisp/progmodes/elisp-mode.el (elisp--eval-defun-1):
* lisp/frame.el (frame-set-background-mode): Update to work with hash
tables instead of alists.
* lisp/faces.el (face-new-frame-defaults): Mark obsolete.
(face-list): Update to use face--new-frame-defaults.
(frame-face-alist): Moved here from src/xfaces.c.
(x-create-frame-with-faces): Update to handle subtle semantic change
to how frame faces propagate, which otherwise breaks frame creation
with reverse video enabled (bug#41200).

Reworked from a patch by Clément Pit-Claudel <clement.pitclaudel@live.com>.