ITS#1983 big writes with SASL

[hyc@highlandsun.com]

A fix is now in the CVS HEAD (liblber/sockbuf.c and libldap/cyrus.c). I have
tested this by searching for an entry that holds a 780K JPEG photo, so I'm
sure that slapd now works correctly. However, the client library still has no
support for large writes (with or without SASL, large writes simply fail).

  -- Howard Chu
  Chief Architect, Symas Corp.       Director, Highland Sun
  http://www.symas.com               http://highlandsun.com/hyc
  Symas: Premier OpenSource Development and Support