operation is executing (as opposed to c->valx which indicates which
value in the target is being changed)

Partially revert rev 1.126.

is done

superior entries are flagged (depending on underlying backend) etc...

without string[len] == '\0' causes assert in ldap_dn2bv_x.

fix several minor issues with using dangling pointers and uninitialized data
fix caching of privileged connections
fix issues with unresponsive target failures during search

Preserve delete/replace indication from original request

fix concurrency issue when binding before a search; rework and cleanup data structures (remove unused members)