Don't crash in slapcat when NULL entry is returned.

this was actually working when compiling without optimization

attribute

no normalizer, a_nvals = a_vals.

	schema engine updated (but not schema routines so things don't run yet)
	nvalues mostly populated, enough for tests 0-2 to pass
	schema routines needs lots of work
	modify/mods codes needs lots of work

Coverted LDAP_LOG macro to use subsystem ID int values instead of string values

Patch: str2entry() dereferences NULL  (ITS#1822)

Sorry, last patch was wrong.  I didn't notice that e->e_dn
always is NULL at that point.  Here is a corrected patch.

Subject: Patch: str2entry() dereferences NULL  (ITS#1822)

entry.c:str2entry() prints pdn->bv_val even though pdn is always
NULL.  pdn was pretty dn before version 1.80.

ITS#1677 - cast away const warnings
ITS#1678 - unsigned char args to ctype funcs
ITS#1682 - don't redefine ldap_debug
ITS#1683 - uninitialized vars
ITS#1703 - ldo_debug initialization
ITS#1705 - unsigned testing
ITS#1706 - socklen_t args
ITS#1719 - back-tcl update (other cleanups/fixes/improvements; yet untested)
ITS#1724 - integerNormalize/integerFilter/integerIndexer bugs
ITS#1725 - libdes not required

Implement back-null (/dev/null style backend)
Cleanup some misc warnings ("%lu" format, unused/uninitialized vars,
        ambiguous operator precedence)

Kurt, please regenerate configure

liblber:ber_bvarray_{add,free}.

Misc cleanup / lint removal