Likely a copy and paste left over.

Allows for easy extraction of individual objectclass definitions using
matchedValues searches.

Fixes rev 1.210 (new since last OpenLDAP release).

The name rs_entry2modifiable() is more reasonably sized.
For now, leave behind a macro rs_ensure_entry_modifiable in proto-slap.h.

compare and modify. Note that line wrapping is disabled; presumably
existing code expects the compare argument to use only a single line.
The manpage should be updated to note whether standard LDIF with
default line wrapping is expected or not. (Add uses default width already.)