Fix clicked, released and doubleClicked signal points...
Fix clicked, released and doubleClicked signal points
The clicked, released and doubleClicked signals for line, spline and
area series return the point where the press was triggered.
Change-Id: I075bb213657a7cadabdec3a72fde7cf5f412e982
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@theqtcompany.com>