evdns: add regress for EVDNS_BASE_DISABLE_WHEN_INACTIVE base flag
evdns: add regress test for flag EVDNS_BASE_DISABLE_WHEN_INACTIVE without ns
regress dns: drop alarm() (since windows don't have it)
Merge pull request #128 from azat/tests-disable-when-inactive-v5

Some tests for EVDNS_BASE_DISABLE_WHEN_INACTIVE flag