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
Merge branch 'master' into alias

Conflicts:
	pdns/dnsproxy.cc
Replace _LDFLAGS with _LIBADD where needed
Don't build dvi

We don't use them and it speeds up the build a little bit.
Merge pull request #1756 from rubenk/ldflags-to-libadd

Replace _LDFLAGS with _LIBADD where needed
travis: build the old geobackend as well
polarssl: don't build empty objects

Fixes the following warnings on OSX:

/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-havege.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-md2.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-md4.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-memory_buffer_alloc.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-memory.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-padlock.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-pkcs11.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-threading.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-havege.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-md2.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-md4.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-memory_buffer_alloc.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-memory.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-padlock.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-pkcs11.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: .libs/libpolarssl.a(libpolarssl_la-threading.o) has no symbols
Merge pull request #1758 from rubenk/travis-test-geobackend

travis: build the old geobackend as well
Don't add includes to both CPPFLAGS and CXXFLAGS
Merge pull request #1759 from rubenk/polarssl-build-only-what-we-need

polarssl: don't build empty objects
Revert "polarssl: don't build empty objects"

This reverts commit c32f4f4f824029ae19bce5dece40ec73a6addd76.

We need padlock.c on i386; perhaps we need other files in other places as well.
Use nanosleep instead of usleep
Use Utility::usleep instead of usleep
Fixup the static binaries check

It did set a variable which wasn't used (debug)
and didn't display a result.

Now we display the default, and yes/no properly

This still doesn't change the fact that --enable-static-binaries
doesn't do the right thing, but I'll fix that in another patch.
Replace hardcoded -llmdb with variable

and rename the variable to be consistent
with what we do for other libs
Remove hardcoded -lsqlite3 with variable