(Xatom_wm_change_state): Just declare.

(Xatom_wm_change_state): Just declare.
(Xatom_emacs_selection, Xatom_clipboard, Xatom_clipboard_selection):
(Xatom_wm_change_state, Xatom_incremental, Xatom_multiple):
(Xatom_targets, Xatom_timestamp, Xatom_delete, Xatom_insert_selection):
(Xatom_pair, Xatom_insert_property, Xatom_text): Decls deleted.
(x_begin_selection_own): Decls deleted.
(Fx_open_connection): Set up only the wm atoms here.
Call Xatoms_of_xselect.