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I.e. use bookmark-edit-annotation rather than bookmark-read-annotation.
(bookmark-read-annotation-mode-map, bookmark-annotation-paragraph)
(bookmark-annotation-buffer, bookmark-annotation-file)
(bookmark-annotation-point, bookmark-send-annotation)
(bookmark-read-annotation-mode, bookmark-read-annotation): Remove.
(bookmark-edit-annotation-text-func): Rename from
bookmark-read-annotation-text-func.  Keep old name as an obsolete alias.
(bookmark-edit-annotation-mode-map): Move initialization into declaration.