Drop FRAME_PTR typedef.

Drop FRAME_PTR typedef.
* composite.c, font.c, font.h, fontset.c, fontset.h, frame.c, frame.h:
* ftfont.c, ftxfont.c, gtkutil.c, gtkutil.h, image.c, keyboard.c:
* menu.c, menu.h, msdos.c, nsfns.m, nsfont.m, nsmenu.m, nsterm.h:
* nsterm.m, scroll.c, term.c, w32fns.c, w32font.c, w32font.h:
* w32inevt.c, w32inevt.h, w32menu.c, w32notify.c, w32term.c, w32term.h:
* w32uniscribe.c, w32xfns.c, widget.c, window.c, xdisp.c, xfaces.c:
* xfns.c, xfont.c, xftfont.c, xmenu.c, xselect.c, xterm.c:
All related users changed.