<rr>_unknown rdf for unknown/supported types

Also when underlying ldns doesn't support it
Temporarily disable timeout test 3

because of unpredictable results
[API 0.503] Add CDNSKEY and OPENPGPKEY rr types
[API 0.504] RFC 2671 is obsoleted by 6891

Also, document version changed to "September 2014"
[API 0.505] "resolver_type" now "resolution_type"

Renamed in the response from getdns_context_get_api_information()
return_api_information extension doesn't exist

So remove from manpage
Remove old version of spec in clumsy location
[API 0.506] GETDNS_RESPSTATUS_ALL_BOGUS_ANSWERS

return code for with the dnssec_return_only_secure extension
[API 0.507] typo s/reponse/response/g
Update ChangeLog for 0.1.4 release
[API 0.508] RFC 7344 CDS and CDNSKEY rr types
Bumb version
Chase NSEC and NSEC3 with return_validation_chain
Removed binary packages support from README.md
Workaround "clang not found" travis build error

See https://github.com/travis-ci/travis-ci/issues/2607
Second attempt to fix travis clang build
Oh no, sudo -i changes cwd
Fix release date
Added a check for transport