normalize authcDN (ITS#3246); don't touch databases when running slapadd in dryryn mode (ITS#3244); release lock when acquiring entry in tool mode (ITS#3245)

tools directory is now obsolete.

sync with the man page slapadd(8) : does not change syncrepl entries in the ldif file when neither of the promotion (-p) or the demotion (-r) option is given.

new slapadd options
-p       : promote : If the ldif file contains syncConsumerSubentries, convert
                     them to a single syncProviderSubentry. Its contextCSN
                     attribute has the largest value of the syncreplCookie
                     attributes of the syncConsumerSubentries.
                     syncProviderSubentry in the ldif file is retained.
-p -w    : promote : Recalculate contextCSN based on entryCSN of each entry.
           create    Existing syncConsumerSubentries and syncProviderSubentry
                     are ignored and not added to the directory.
-r       : demote  : If the ldif file contains syncProviderSubentry, convert it
                     to a syncConsumerSubentry having the default syncrepl id
                     of 0. syncConsumerSubentries in the ldif file are retained.
-r -w    : demote  : Recalculate syncreplCookie based on entryCSN of each entry.
           create    Existing syncConsumerSubentries and syncProviderSubentry
                     are ignored and not added to the directory. The default
                     syncrepl id of 0 will be used for the new
                     syncConsumerSubentry.
-r -w -i %d[,%d]*  : Using the comma separated list followed by the -i option,
                     it is possible to create multiple syncConsumerSubentries
                     having the syncrepl ids specified in the list.
                     syncreplCookie values of these sycnConsumerSubentries
                     will have the same value, either from the maximum
                     entryCSN value or from the contextCSN value of the
                     syncProviderSubentry.

creatorsName, modifiersName, createTimestamp, modifyTimestamp) when it adds
from ldif file. Month field in time format in entryCSN is changed to 1~12.

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

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

maybe I should trim this also).  Useful to check LARGE ldif files which
will require TONS on indices without failing at the very last entry for
a silly typo after 45 min. or more :)