Needs work in normalizers, etc.

consolidated into the Operation structure. All reply parameters
are consolidated into the new SlapReply structure. Most operations
now have identical call signatures... Changes are not #ifdef'd,
revert to -r NO_SLAP_OP_BLOCKS if necessary to back out.

of outstanding requests on a connection. Set rate limits for request
execution:
   no connection can have more than maxthreads/2 ops executing at once.
   a connection that is write-blocked will not execute any new ops.
   queued ops must drain before any new ops can execute.
If the queue exceeds the max_pending limit, the connection is closed.
...also fixed a bug where a connection was not marked active if it never
received a Bind.

connection_pool_max/2 operations already executing. May want to tune
this to a higher value, e.g. connection_pool_max - XX, etc. Fix in
result.c throttles the connection too late, all threads are already
consumed by the time the send buffer blocks.

using LDAP_DEVEL (to indicate experimental) to enable experimental features
(true for HEAD unless LDAP_REL_ENG is defined)

Stubs for PermitModify/NoReferrals controls; implementation coming soon

hangs in heavy load situations.

SLAPI - Netscape plugin API for slapd - based on patch contributed by Steve Omrani <somrani@us.ibm.com> as ITS#2073

It likely has no name anyway, and the client owns it after all.

- use bervals for url and sockname
- pass connection_init() the listener struct pointer instead of each value
- don't copy them in the Connection struct 'cause they're not going to change
- define macros for legacy usage of c_listener_url and c_sockname

If you have a better way, jupm on in...

be freed until after all associated ops are freed.)

Coverted LDAP_LOG macro to use subsystem ID int values instead of string values