fix CHAOS TXT registration for recursor (making version.bind work)
Fix docs for export-etc-hosts-search-suffix

Fixes #1097
remove ancient INSTALL file from gmysqlbackend
remove old TODO file from bindbackend
code cleanup gmysqlbackend
remove updateDNSSECOrderAndAuthAbsolute from bind backend
disarm debug output
remove stamp-h.in file
use QClassEnum for qclass values
pdnssec check-zone, fix DNSKEY checks
Merge pull request #1098 from zeha/fix-1097

Fix docs for export-etc-hosts-search-suffix
Merge pull request #1104 from mind04/pdnssec

pdnssec check-zone, fix DNSKEY checks
move mysql/pgsql/sqlite3 .sql files to backend directories
remove PowerDHCP? files
remove long gone tools from pdns/Makefile.am
Merge pull request #1105 from mind04/movesql

move mysql/pgsql/sqlite3 .sql files to backend directories
Merge pull request #1106 from mind04/cleanup

Cleanup
Add 'extended' database schema. Add domain metadata and TSIG support to original database schema.
set default mysql engine to InnoDB in extended schema
move .sql files to backend directories