Fix library/include paths for building "Release".
Create getpass() from ud's mygetpass().

I rather have NOID printed as "-1".  It it could argued that ID
should be signed.

cache_set_state() and state args are no history.
Move cache_entry_cmp() and friends to slapd/entry.c to allow sharing
of functions between backends..  Renamed to entry_cmp().

The new e_private field can be used for any backend purpose.  In LDBM,
it's used to point th the private entry info struct.  The LDBM entry
info struct is only visible to the LDBM cache.
WARNING: This change has not be ported to other backends!  Breakage is likely.

Provision for a bdb2 backend-specific DB file suffix.
Fix of the double-open of backend types.

dn rewriting to frontend dn.c function.

the backend type info structure.  Use this filed to control open
and close such that backend's without databases are skipped.

tm_year being 100+.

instead of AC_CHECK_FUNCS() as symbol may be mangled.

Use $BACKEND instead of BDB2.  Fallback to LDBM if $BACKEND is not BDB2.

Just use compiled in defaults.

Integration into ./configure ( --enable-bdb2 ).
Adaptation of the test-suite ( 'make' -> ldbm; 'make bdb2-local' -> bdb2 ).
Minor fixes in slapd/libldbm.

ldap commands.

signals aimed at the process.

BEWARE: the backend will be compiled.
        the backend will NOT be invoked, yet.
        the backend CANNOT be invoked, yet, because it is NOT yet
            integrated into the new initialization/startup environment
            of the slapd server.

  First version with waiting on int to become 0; should be implemented
  via conditional variable...
Fix of typos.
First anchor for new bdb2 backend.

Separates per backend type from per backend database initialization
	and startup.  Also supports per type / per backend shutdown.
New frontend startup/shutdown routines are also provided:
	slap_init() slap_startup() slap_shutdown() slap_destroy()
New frontend->backend startup/shutdown is managed by:
	backend_init() backend_startup() backend_shutdown backend_destroy
backend_init() now calls bi_init() to initial all function pointers
for the backend (excepting bi_init() which is now the only hardcoded
entry point).  New entry points are detailed in slap.h struct
backend_info.  backend_info is a per database type structure.
Besides the new startup/shutdown entry points, the new interface
also supports per backend type configuration options.  One could have:

	backend bdb2	(new Berkeley DB 2 backend)
	bdb2_home	/directory

	database bdb2
	...

	*** This code is fairly experimental ***
	*** Much cleanup and testing is still needed ***

see slap.h for details on struct backend_db and backend_info.

	Kerberos detection of des_debug
	detection of resolv.h and arpa/nameserv.h
Updated affected codes.