add oracle backend mode to zone2sql
add oracle mode to start-test-stop
make getBeforeAndAfterNames() virtual in dnsbackend
fix TSIG import in oracle backend
nsec3 oracle backend regression tests
skip failing oracle backend tests
TODO
- add/delete empty non-teminals on record insert/delete
- update NSEC/NSEC3 chain if (delegation/empty non-terminal insert/remove)
- set/unset auth (delegation insert/remove)
Everything above is fixable in the mysql schema
Merge pull request #1202 from mind04/oracle

Oracle backend