unifdef -DSLAP_ACL_HONOR_MANAGE
unifdef -DSLAP_OVERLAY_ACCESS
unifdef -DSLAP_ORDERED_PRETTYNORM
unifdef -DSLAP_AUTHZ_SYNTAX
Move LDAP_COLLECTIVE_ATTRIBUTES, LDAP_COMP_MATCH, and LDAP_SYNC_TIMESTAMP
back behind LDAP_DEVEL (as these either too experimental or not yet
implemented).

if it was provided. Always check and graduate, regardless of shadow status.

entry_schema_check() nows takes Operation instead of Backend as first
argument, allows it to check o_no_schema_check

fix improper use of "fail_if_no_mapping" flag: fail in case of error, don't fail only if mapping is not present

fix different issues with referrals in searches; remove unused tests; cleanup referrals in tests so that they don't get chased; improve schema checking in modrdn and updates in general; minor cleanup