Add an animation mode, to test how the combobox behaves if the model

Add an animation mode, to test how the combobox behaves if the model

Wed Mar  3 00:28:59 2004  Matthias Clasen  <maclas@gmx.de>

	* tests/testcombochange.c: Add an animation mode, to test
	how the combobox behaves if the model changes while it is popped
	up.