Deleted modules in v3

[Alan DeKok]

  FYI.  If anyone has objections, say so.


Deleted Modules
---------------

The following modules have been deleted, and are no longer supported
in Version 3.  If you are using one of these modules, your
configuration can probably be changed to not need it.  Otherwise email
the freeradius-devel list, and ask.

rlm_acct_unique
===============

This module has been replaced by the "acct_unique" policy.  See
raddb/policy.d/accounting.

The method for calculating the value of acct_unique has changed.
However, as this method was configurable, this change should not
matter.  The only issue is in having a v2 and v3 server writing to the
same database at the same time.  They will calculate different values
for Acct-Unique-Id.

rlm_acctlog
===========

You should use rlm_linelog instead.  That module has a superset of the
acctlog functionality.

rlm_dbm
=======

No one seems to use it.  There is no sample configuration for it.
There is no speed advantage to using it over the "files" module.
Modern systems are fast enough that 10K entries can be read from the
"users" file in about 10ms.  If you need more users than that, use a
real database such as SQL.

rlm_fastusers
=============

No one seems to use it.  It has been deprecated since Version 2.0.0.
The "files" module was rewritten so that the "fastusers" module was no
longer necessary.

rlm_policy
==========

No one seems to use it.  Almost all of its functionality is available
via "unlang".

rlm_sql_log
===========

This has been replaced with the "null" sql driver.  See
raddb/mods-available/sql for an example configuration.

The main SQL module has more functionality than rlm_sql_log, and
results in less code in the server.