Changes outside of #ifdef include three value filter processing.

basic structures for handing language tags and binary option
(but less actual code to actually support them).  Provided
for reference only.  Will not even compile.

Use BASE64 if attr-desc includes ";binary"

implement an at_exit() handler.

wrong. Fix from adamson@andrew.cmu.edu.

additional schema items.

OID for experimental syntax.

Noticed that abandon and unbind don't have control support... something for
another day.

rewrite.

Attribute subtyping, especially that using attribute description
options, will have to reengineered.

attributes of the syntax.  Such attribute values be transferred
using binary syntax unless ber2str/str2ber routines are provided.
Used in conjunction with ";binary" attribute description option
and/or the Binary syntax.

filters.

routines to separate file to keep schema.c of managable size.

Move AttrInfo from back-ldbm.h to attr.c

Still not usable.

MUST be defined).

one can select NDBM as NDBM is not supported.

behind -USLAPD_SCHEMA_COMPAT.

unless access requested is WRITE.  This allows you to apply
an ACL to limit search/reading of no-user-modification attributes.
Writes, of course, are always prohibited (by do_add, do_modify).