Don't include padlock code
Disable dependency tracking in Travis

Since we don't reuse the results we have no use for it.
Speeds up the build a and makes the build output more readable.
Use zeromq library C API, based on work by @wtfuzz and @hexwave. Fixes #1760.
Merge pull request #1830 from rubenk/travis-disable-dependency-tracking

Disable dependency tracking in Travis
Merge pull request #1829 from rubenk/remove-padlock

Don't include padlock code
security poll
improve "subversion" idea, add delegation
make sure we don't launch the query distribution thread if configured to run unthreaded
clarify -1 semantics
implement security polling according to docs/security-poll.md
actually add the relevant files
Merge pull request #1612 from cmouse/use-zeromq-c-api

Use ZeroMQ C API
slightly improve docs of semantics of dynamic dns updates
Merge branch 'master' of github.com:PowerDNS/pdns
make sure we don't launch the query distribution thread if configured to run unthreaded
Merge branch 'secpoll' of github.com:ahupowerdns/pdns into secpoll
report aborted test runs in jenkins
document alternative TSIG algos, thanks maik
Revert "make sure we don't launch the query distribution thread if configured to run unthreaded"

This reverts commit cfc99d7ea24aa40ca0d8cabd11ca2257626197bf.
honor SOA-EDIT while considering "empty IXFR" fallback, fixes #1835