(Just slapcat for now, other tools don't seem to be critical.)

tools directory is now obsolete.

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

consolidated into the Operation structure. All reply parameters
are consolidated into the new SlapReply structure. Most operations
now have identical call signatures... Changes are not #ifdef'd,
revert to -r NO_SLAP_OP_BLOCKS if necessary to back out.

returned from the backend.

Replace old Id as needed (back-tcl).
Leave updating of contribWare to contributors (for now).

New id2entry (id-less) format (ldbm/bdb2)
Removed id2children (ldbm/bdb2)
Added nextid database (ldbm)
Broke ldbmtest
Removed ldif2* tools (ldbm/bdb2)
Added slap tools (slapadd, slapcat, slapindex)