fix a longstanding bug in expandPropertyValues(expandList=True) where it might return a non-list or [''] if the contents is an empty string, making the output inconsistent with how PathSets/flatten would resolve the same expression
fix a longstanding bug in expandPropertyValues(expandList=True) where it might return a non-list or [''] if the contents is an empty string, making the output inconsistent with how PathSets/flatten would resolve the same expression

xpybuild/xpybuild,xpybuild/xpybuild,xpybuild/xpybuild,xpybuild/xpybuild