make tests (0-4) now works! (w/ dnNormalize/dnMatch cheats)

ava normalization issues.

hex escape everything requires escape (uncomment #define PRETTY_ESCAPE to revert to previous behavior)

more re-engineering; now rdn_attrs() and so are written in terms of ldap_str2rdn; some functions are deprecated

point to a NULL pointer, that is assert( *out == NULL ).
Eventually, we'll allow **out to point to a preallocated
struct berval (to avoid unnecessary allocation).

to adjust ber_lens as needed).

re-engineered some dn related functions with ldap_dn* functions; helpers should be used instead of deprecated functions in code

strlen() from acl processing.

conn->c_dn,c_ndn, Access->a_dn_pat)