Make "on" syntax mandatory for value sources and interceptors

Where you would have written

   x: NumberAnimation {}
   y: Behavior {}

you now must write

   NumberAnimation on x {}
   Behavior on y {}

This change also makes the parser more strict with respect to multiple
assignments to a single property - they're no longer allowed.  For example
this

   x: 10
   x: 11

is now an error.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/auto/declarative/qdeclarativebehaviors/data/dontStart.qml b/tests/auto/declarative/qdeclarativebehaviors/data/dontStart.qml
index ba7cc9cbf0..12b1b7b30e 100644
--- a/tests/auto/declarative/qdeclarativebehaviors/data/dontStart.qml
+++ b/tests/auto/declarative/qdeclarativebehaviors/data/dontStart.qml
@@ -9,7 +9,7 @@ Rectangle {
         id: redRect
         width: 100; height: 100
         color: Qt.rgba(1,0,0)
-        x: Behavior {
+        Behavior on x {
             NumberAnimation { objectName: "MyAnim"; running: true }
         }