add gsqlite tests to travis and remove cache tests to save some time
speedup tests
add .dirstamp to .gitignore
add pgsql tests to travis
add skip-unboundhost to remote backend delegation tests
optinonal, allow missing tools for verify-dnssec-zone test
add TSIG to nsd test
Changed forced MD5 into proper selection for TSIG
build recursor in travis
Merge pull request #1000 from mind04/speedup-tests

improve travis tests and a little bit more