zone2lmdb and lmdb-backend regression tests
first baby steps to dnssec in lmdb-backend
import dnssec records in lmdb database
get NSECx direct from backend and use it for lmdb-backend
get RRSIGs direct from backend and use it for lmdb-backend
store lmdb metadata in zone record
fix NSEC in lmdb-backend
unswap ttl and IN in saxfr output
put lmdb-backend dnssec support behind lmdb-experimental-dnssec switch
Use YaHTTP instead of CURL in remotebackend
Partial implementation of remotebackend http connector using yahttp
Complete implementation of httpconnector
Remove CURL and REMOTEBACKEND_HTTP
Support new RESTful methods
Add some sanity checks
Merge pull request #1491 from cmouse/remotebackend-yahttp

Remotebackend yahttp
YaHTTP upstream update

Fixes:
  - Chunked responses and requests are parsed properly even when
    the headers and body come in separately.
list make install content
don't build .a files for backends, we do not use them at all
make lmdbbackend use libtool object