QmlDesigner: Fix nodeinstancesignalspy

The signal spy never worked with value types. The recursive code is not
needed anymore and anyway broken.

Change-Id: I28861d13fa6ca8b7e8af97f5720c2968759da264
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
QmlDesigner: Double click in the form editor only for the left mouse button

Change-Id: I130bacab8d94ddc5b8544a1b74d662059f976aca
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
QmlJsTools: Compile fix for Qt 4.

Change-Id: Ifaa78943be52d821bfbc3f32fb3fc914cf2d4315
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>