Add extra AC_HTONL for win32 alpha.

ldap.h: added #include <lber.h>
ldap.h: added tags for extended operations

Toy with dllimport/dllexport stuff (think I'll leave the real dll work to
somebody else).
Added ldap_strdup() wrapper of ber_strdup().

Remove memory.h/malloc.h inclusion from <ac/string.h>.
Need to s/<stdlib.h>/<ac/stdlib.h> everywhere.

and ripple change through -lldap.

Make _MOD_SOFTADD 0x1000 to minimize chance of conflict with legit changes
to API spec.
Fix memory leak in ldap_mods_free() and minor memory allocator issues.

(barely) hide more internals.

Only testavl uses this interface.

includes single to multiple hooks changes.
ber_mem* reimplementation.
namespace glue (finally naming has not be decided upon nor implemented).
Added ldap_int_strdup to handle "internal" strdup'ing, this version uses hooks.
ldap_pvt_strdup still available for when strdup() is missing, this version
directly uses system allocators.
Updated -lldif to use ber allocators.  Items returned by ldif routines
should be ber_memfree()d as needed.

New error code for null string input.

myrealloc is pointer to a realloc() wrapper.
Must be first library call or else.

Install ldap_schema.h

library use:
  LBER_ macros expand to system routines.
  LDAP_ macros expand to new ber_ allocators.

Add ber_ and ldap_ memory allocators/deallocator:
  ber_ routines are wrappers of LBER_ macros.
  ldap_ routines are wrappers of ber_ routines.

Removed safe_realloc() macro from various files.  This issue
(if an issue) should be resolved across whole package.

ldapmodify.c now uses ber_ allocators to resolve ber_bvfree()
vs. WIN32 multiple heaps issue.

These changes should facilate implementation of
  ber_set_option( NULL, LBER_OPT_MEMORY_FN, ...)
and
  ldap_set_option( NULL, LDAP_OPT_MEMORY_FN, ...).

Provide (and use) #define shortcuts
Really kill global_oc & global_at
Publish schema through LDAP (really, it's there at last :-)

Incorporate #define's per Kurt's suggestion

Provide human-readable errors.

Fix namespace contamination, some comments added.

code by mistake.

LDAP_OPT_MATCH_STRING to ldap.h and libldap/options.c.

Add #undef and other protection of macros.

Initial incomplete and broken version.

 added comments
 removed LDAP_MAX_ATTR_LEN
 removed LDAP_COMPAT* from <ldap.h> but not code.
 move LDAP_DEFAULT_REFHOPCOUNT to ldap-int.h
 added experimental options macros
 added LDAP_CONTROL_REFERRALS macros
libldap:
 Replace ld_attrbuffer with per use allocated attributed.
 ldap_first/next_attribute attributes now must be freed (as per draft).
 unifdef -DLDAP_API_FEATURE_X_OPENLDAP_V2_REFERRALS