check if the collapsing node has its child selected, if so take a row

check if the collapsing node has its child selected, if so take a row

2004-01-20  JP Rosevear <jpr@ximian.com>

	* e-source-selector.c (test_collapse_row_callback): check if the
	collapsing node has its child selected, if so take a row reference
	to remember the selection
	(row_expanded_callback): check if the expanding node has the saved
	primary selection under it and re-select if so
	(init): listen for signals
	(impl_dispose): free the primary selection