by portable.h with NDEBUG undefined.  This makes assert() is always
available and automatically disables itself when LDAP_DEBUG is undefined.
I've included a basic assert() for pre-STDC compilers.  It relies on
abort() which may not actually be available.  (well replace abort()
with whatever is appropriate if and when we're faced with a pre-STDC
compiler that doesn't have assert()).

to avoid unportable casts of integers to pointers and back.

rewrote sockbuf_buf_init macro not to expand its argument multiple times.

lber: ifdef'ed out lber_..set_nonblock() function because it used ioctl's.
  If it remains, it needs to be written to support various methods for
  setting non-blocking.  ioctls should probably be last choice.  configure
  could detect existance of fcntl(), ioctl(), etc.
bdb2:
  added .dsp/.dsw files and did some basic cleanup (still needs work).

2. Make ldbm_Env a failure-safe entity.

v3 MODDN (MODRDN) operation on the client side.

from what the current code can handle.

Use pthread_*attr_default.
Don't use a void return value from pthread_yield.

which only part of a LDAPMessage is available on a socket.

The server-code seemed to handle this correctly already, so I didn't touch
it.

My apologies for the hack in ber_get_next :-).