Campbell Barton
dfb963c70d
Resolve ownership ambiguity with shared physics pointers. Previously, LIB_ID_CREATE_NO_MAIN allowed pointer sharing with the source ID so physics caches can be shared between original and evaluated data: (Object.soft.shared & Object.rigidbody_object.shared). This only worked properly for LIB_TAG_COPIED_ON_WRITE ID's, as LIB_TAG_NO_MAIN can be used in situations where the original ID's lifetime limited by it's original data. This commit adds `LIB_ID_COPY_SET_COPIED_ON_WRITE` so ID's only share memory with original data for ID's evaluated in the depsgraph. For all other uses, a full copy of physics data is made. Ref D11228#287094