* GormCore/GormDocument.m: Corrected issue with adding cells to
	object tree so that the can be properly addressed in connections.
	Change to -attachObject:toParent:.



git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/apps/gorm/trunk@36024 72102866-910b-0410-8b05-ffd578937521