2002-10-07  Havoc Pennington  <hp@redhat.com>

        Add a modifier key preference for the Alt+click stuff.
	Can be set to "disabled" as well.

	* src/run-metacity.sh: load .Xmodmap in the Xnest if it exists

	* src/display.c (meta_display_ungrab_window_buttons): ungrab
	AnyModifier in case the modifier changed since we grabbed
	(meta_display_open): rearrange code to use meta_display_close() to
	mop up when we can't find any screens, avoiding the need to
	keep the bail-out code in sync with meta_display_close.

	* src/keybindings.c (devirtualize_modifiers): move this function
	to a public place in display.c

	* src/metacity.schemas.in: add setting for the modifier key
	to use for Alt+left/middle/right click.

	* src/prefs.c (update_binding): add a missing newline to a warning
	(meta_prefs_get_mouse_button_mods): new function

	* src/ui.c (meta_ui_parse_modifier): new function