The source project of this merge request has been removed.
Added an optional flag allowOverwrite to the thread-safe overload of GeoAlignableTransform::setDelta()
The value of this flag gets forwarded to GeoVAlignmentStore::setDelta(). The concrete implementations
of the GeoVAlignmentStore interface are expected to decide what to do if a client attempts to overwrite
delta for an alignable transform that already has its delta recorded in the given store.