Use FRAME_X_DISPLAY instead of x_current_display and XDISPLAY.

Use FRAME_X_DISPLAY instead of x_current_display and XDISPLAY.

(x_make_frame_visible, x_make_frame_invisible):
Pass a frame ptr to x_sync.

(x_term_init): Init all the components of dpyinfo.

(x_display_info_for_display): New function.

(x_*_mod_mask): Variables deleted.
(x_x_to_emacs_modifiers, x_emacs_to_x_modifiers):
New arg dpyinfo; all callers changed.
Store the masks in that structure.

(icon_bitmap): Variable deleted.
(x_bitmap_icon): Use icon_bitmap_id in x_display_info.

(icon_font_info): Variable deleted.

(x_term_init): Set up `connection' field.

(x_find_modifier_meanings):
Arg is now struct x_display_info *.
(x_term_init): Return an x_display_info *.
Store all the data in it, including X atoms and xrdb.
Put the x_display_info structure on x_display_list.
Pass name as Lisp_Object.
(the_x_screen): Variable moved here.
(syms_of_xterm): Staticpro parts of the_x_screen.

(windowinfo): Variable deleted.

(Xatom_*): Variables deleted.
(x_iconify_frame, XTread_socket): Get atoms from the x_display_info,

(XTread_socket): Don't update Vmouse_depressed.

(x_mouse_grabbed): Variable deleted.
(note_mouse_highlight): Use grabbed field instead.
(XTmouse_position, XTread_socket): Likewise.

(x_calc_absolute_position, x_wm_set_size_hint):
Get screen height, width from the x_display_info structure.