Needs to be applied to other stack allocated berbufs.

TODO:
	Fix transactional consistency
	Add client response control handling

directly re-uses existing ber buf.

set LBER_ELEMENT_SIZEOF to 256
maybe this should be set to N*sizeof(size_t) or something

allocating a copy.

rework them slightly to avoid computations which might result in underflow.
Rename them for consistency with other berval routines.
Remove some utf8 lint.

added ber_[mem|case]cmp() macros for fast berval comparison; extensively used in acl and in dn_match macro at present

liblber:ber_bvarray_{add,free}.

leftover ber_bvdup eliminated; rewritten ber_bvdup in terms of ber_dupbv; eliminated wrapper macro; other ber_* improvements

Clean up headers.

Compile with -DLDAP_CONNECTIONLESS to use this code.
For slapd, use "-h cldap://" to listen on UDP.
For ldapsearch, use "-H cldap://" to query on UDP.
Client-side support is very minimal:
  no automatic timeout/retries
  no basedn wildcard expansion on results
  no support for specifying multiple servers at once.

macros into our namespace and limit use to headers.  A subsequent
round will add macros to separately handle forward declarations
of variables from declaration of function prototypes.  The last
round will add additional macros for declaring actual variables and
functions.

other minor changes.

was only of limited use with LDAPv2 (worked okay if no non-T.61
values existed) but downright dangerous in the face of LDAPv3.
Any translation must be schema aware and the BER isn't.