Consistent naming for (to|from)Is(Defined|Sourced) in animations

To store whether "from" and "to" values are defined and/or sourced,
QQuickPathAnimationUpdater     used fromDefined format,
QQuickAbstractAnimationPrivate used fromIsDefined format,
QQuickAnimationPropertyUpdater used fromIsDefined format,
QQuickAnimatorPrivate          used isFromDefined format,
QQuickBulkValueAnimator        used fromDefined format,
QQuickAnimationPropertyUpdater used fromDefined format.
This patch changes all these to use the variable names
"fromIsDefined", "fromIsSourced", and "toIsDefined".
This makes the code more readable.

Change-Id: Ia6c228208eb651247b0ba70f83afadb5b1027049
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
(cherry picked from commit 702b00bc8bfdc51592a01c9b7ed5939d85a7e192)
Reviewed-by: Andreas Buhr <andreas.buhr@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

0 files changed, 0 insertions, 0 deletions