T894 drops as many uses of "orphan" as possible.
At a compatibility break:
* Drop `PCMK_OPT_STOP_ORPHAN_RESOURCES` and `PCMK_OPT_STOP_ORPHAN_ACTIONS` symbols.
* Drop `PCMK_OPT_STOP_ORPHAN_RESOURCES` and `PCMK_OPT_STOP_ORPHAN_ACTIONS` from the `old_name` field of cluster options.
* Use an XSL transform to convert `"stop-orphan-resources"` to `"stop-removed-resources"` and to convert `"stop-orphan-actions"` to `"stop-removed-actions"'.
* Drop `PCMK_XA_ORPHAN` and `PCMK_XA_ORPHANED` symbols.
* Drop `PCMK_XA_ORPHAN` and `PCMK_XA_ORPHANED` from XML outputs, leaving `PCMK_XA_REMOVED`.
* For text/default-formatted output, replace strings containing "orphan" with the appropriate "removed" string. There should already be COMPAT comments for each of these.
* Drop "orphan" and "orphaned" attributes from XML schemas.