fixup: work correctly with bookmarks
Initializing bookmarkchanges to an empty list is required when finalizing relocation of a node that has one or more bookmarks. Other commands that use evolvecmd._relocate() already do this.
Initializing bookmarkchanges to an empty list is required when finalizing relocation of a node that has one or more bookmarks. Other commands that use evolvecmd._relocate() already do this.