Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

Resolves:
https://fedorahosted.org/sssd/ticket/2358

Signed-off-by: Jan Cholasta <jcholast@redhat.com>

Reviewed-by: Jan Cholasta <jcholast@redhat.com>
Reviewed-by: Pavel Reichl <preichl@redhat.com>

Use a script to update DEBUG macro invocations to use it as a variadic
macro, supplying format string and its arguments directly, instead of
wrapping them in parens.

This script was used to update the code:

grep -rwl --include '*.[hc]' DEBUG . |
    while read f; do
        mv "$f"{,.orig}
        perl -e \
            'use strict;
             use File::Slurp;
             my $text=read_file(\*STDIN);
             $text=~s#(\bDEBUG\s*\([^(]+)\((.*?)\)\s*\)\s*;#$1$2);#gs;
             print $text;' < "$f.orig" > "$f"
        rm "$f.orig"
    done

Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>
Reviewed-by: Stephen Gallagher <sgallagh@redhat.com>
Reviewed-by: Simo Sorce <simo@redhat.com>

https://fedorahosted.org/sssd/ticket/1949

With some LDAP server implementations, one server might provide
different "views" of the identites on different ports. One example is
the Active Directory Global catalog. The provider would contact
different view depending on which operation it is performing and against
which SSSD domain.

At the same time, these views run on the same server, which means the same
server options, enumeration, cleanup or Kerberos service should be used.
So instead of using several different failover ports or several
instances of sdap_id_ctx, this patch introduces a new "struct
sdap_id_conn_ctx" that contains the connection cache to the particular
view and an instance of "struct sdap_options" that contains the URI.

No functional changes are present in this patch, currently all providers
use a single connection. Multiple connections will be used later in the
upcoming patches.

In preparation for making struct be_req opaque.

In preparation for making be_req opaque

The sysdb context is already available through the 'domain' structure.