Only replication configuration image to complete, but that might be replaced anyway with the new ones. x500 images removed as they're not used anywhere.

major improvement: baseline support for back-config; minor improvement: trim code to handle absence of librewrite (enable forced when slapo-rwm is configured...)

as a half-way step for ITS#5037

Move db == NULL check to correct spot

undefined mapped attribute types.

Declare ber_int_meminuse.  Fix '#if' -> '#ifdef' LDAP_MEMORY_DEBUG.

Remove accidentally added #define LDAP_MAX_PENDING from last commit.