initial stab at 'ALIAS' or 'ANAME' records for PowerDNS. To use, set an ALIAS record on your apex. Secondly, configure PowerDNS with 'recursor=a.recursor.ip'. Sample zone:

@	IN	SOA	ns1 ahu 2014091619 7200 3600 1209600 3600
@	IN	NS	ns1
@	IN	NS	ns2
www	IN	CNAME	xs.powerdns.com.
ns1	IN	A	1.2.3.4
ns2	IN	A	4.3.2.1
@	IN	ALIAS	www.powerdns.com.
@	IN	MX	25 outpost.ds9a.nl.
elsewhere	IN	CNAME	@

Semantics are that real records override the ALIAS. We only reach out to the alias record if nothing else matched.
this currently breaks ANY queries for the apex btw.
some documentation
remove spurious 'any' (thanks seth) plus clarify CNAME walking
typos
EDNS0, AXFR details, rationale, some wording improvements
send empty SERVFAIL after a backend throws a DBException
DNAME don't sign the synthesised CNAME
update download url in release notes
Merge pull request #1725 from mind04/servfail

send empty SERVFAIL after a backend throws a DBException
Merge pull request #1726 from mind04/dname

DNAME don't sign the synthesised CNAME
make sure that if we can't reload our configuration file on reload-acls, we don't revert our acls
to the built-in defaults, but retain the old configuration. Closes #1728. Thanks to Andreas Jakum for spotting this issue.
update canary
correct error message
Update pdns_with_postgresql.m4

Small patch to fix compilation on FreeBSD (and possibly other UNIX distributions)
Merge pull request #1733 from mind04/doc

update el download url in release notes
Merge pull request #1731 from RvdE/patch-3

Update pdns_with_postgresql.m4
raise log level on dlerror(), fixes #1734, thanks @James-TR
use kernel recorded arrival time for question/answer latency measurements, so we include the queue of packets waiting for userland attention in our stats. could be bad.
Update Makefile.am

Install man1/disdist.1 when building tools
Make sure yahttp is linked into remotebackend

Make sure that the yahttp directory is built first
and then link in the resulting library.

Checked with readelf -s .libs/libremotebackend.so | grep NOTYPE
that this fixes the undefined symbol.

Fixes #1732