Change function definition from K&R to prototype. Fix prototype warnings.

Change function definition from K&R to prototype.  Fix prototype warnings.

* lwlib-Xaw.c (xaw_generic_callback, command_reset)
(xaw_update_one_value): Reformat.
(xaw_update_one_widget): Reformat and remove dead code.
(xaw_scrollbar_scroll, xaw_scrollbar_jump, xaw_create_scrollbar)
(xaw_update_scrollbar): Remove (not used).
(make_dialog): Change from K&R to prototype. Remove dead code.
(xaw_creation_table): Remove scrollbar entry.

* lwlib-Xlw.c (x_print_complete_resource_name): Change from K&R to
prototype.
(xlw_update_one_value): Reformat.

* lwlib-Xm.c (x_print_complete_resource_name)
(make_destroyed_instance, free_destroyed_instance, first_child)
(lw_motif_widget_p, resource_motif_string, destroy_all_children)
(xm_arm_callback, xm_update_label, xm_update_list)
(xm_update_pushbutton, xm_update_cascadebutton)
(xm_update_toggle, xm_update_radiobox, make_menu_in_widget)
(update_one_menu_entry, xm_update_menu, xm_update_text)
(xm_update_text_field, xm_update_one_widget)
(xm_update_one_value, activate_button, dialog_key_cb)
(make_dialog, mark_dead_instance_destroyed)
(find_matching_instance, recenter_widget, recycle_instance)
(xm_create_dialog, make_menubar, remove_grabs, make_popup_menu)
(make_main, xm_destroy_instance, xm_popup_menu)
(set_min_dialog_size, xm_pop_instance, do_call)
(xm_internal_update_other_instances, xm_generic_callback)
(xm_nosel_callback, xm_pull_down_callback, xm_pop_down_callback)
(xm_set_keyboard_focus, xm_set_main_areas, xm_manage_resizing): Change
from K&R to prototype.

* lwlib-int.h (widget_creation_function): Fix prototype.

* lwlib.c (allocate_widget_info, lw_register_widget): Change from K&R
to prototype.
(lw_internal_update_other_instances, merge_widget_value): Reformat.

* xlwmenu.c (size_menu_item): Change from K&R to prototype.
Change label_width and height to int.
(draw_arrow, draw_shadow_rectangle, draw_shadow_rhombus)
(draw_separator, display_menu, fit_to_screen, motion_event_is_in_menu)
(map_event_to_widget_value): Reformat.
(display_menu_item): Change from K&R to prototype.