liblber, sockbuf drivers

[Howard Chu <hyc@symas.com>]

One of the things that often concerned me is that we have socket calls and 
references to errno in liblber, which is built as non-threaded code, but 
"errno" changes on many platforms in a threaded process. I was thinking that 
we should move the actual network I/O drivers out of liblber and into libldap, 
so that they'll be compiled correctly (with libldap_r) for their actual 
runtime environment.

Not that I can point to any specific platform where this has been a problem. 
Just thinking out loud.
--
  -- Howard Chu
  Chief Architect, Symas Corp.  http://www.symas.com
  Director, Highland Sun        http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP     http://www.openldap.org/project/