* DataGrid.cs (set_CurrentCell): concede focus as we move around.

	* DataGrid.cs (set_CurrentCell): concede focus as we move around.
	we need this to get rid of the selected background in the bool
	column.
	(CancelEditing): move the ConcedeFocus call to above the Abort
	call.  Also, set is_changing to false and invalidate the row
	header if we were changing before.
	(ProcessKeyPreviewInternal): remove, since noone outside this
	class calls it anymore.  Roll the code into ProcessKeyPreview.
	(EndEdit): remove the internal version.
	(InvalidateCurrentRowHeader): make private.

	* DataGridBoolColumn.cs: simplify this class a bunch.  remove the
	Keys.Escape handling (and with it the last call to
	DataGrid.EndEdit from outside the class.)

2006-06-12  Chris Toshok  <toshok@ximian.com>

svn path=/trunk/mcs/; revision=61630