Reviewed-by: Sumit Bose <sbose@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>

Provides two new layers instead of the previous IPA specific layer:
 1) dp_dyndns.c -- a very generic dyndns layer on the DP level. Its
 purpose it to make it possible for any back end to use dynamic DNS
 updates.
 2) sdap_dyndns.c -- a wrapper around dp_dyndns.c that utilizes some
 LDAP-specific features like autodetecting the address from the LDAP
 connection.

Also converts the dyndns code to new specific error codes.

https://fedorahosted.org/sssd/ticket/1833

state is expected to be a pointer

There was shared code for several unit tests that connected to their own
sysdb instance. This patch adds common code to run a generic request to
completion or connect to a test sysdb.