* Action.[Ch]

* Action.[Ch]
	add signal that provides action when triggered

* ToolbarBackend.[Ch]
	add popupmenu and iconpallete item types

* QLToolbar.[Ch]
	take care of popupmenu and iconpallete

* stdtoolbars.inc
	add panels and menus (and move spellchecker to main ;-)

* functions.xpm
	icon for function list

* iconpalette.[Ch]
	new iconpanel that will replace old iconpalette,
	als subclass of qmenu that updates parent toolbutton

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17868 a592a061-630c-0410-9148-cb99ea01b6c8