- import udns library
(http://www.corpit.ru/mjt/udns.html)
- initial draft for a DNSClient (derived from HTTPClient)
Enable compile and test by adding -D ENABLE_DNS=Yes to cmake flags
Switch back to including the bundled expat sources directly in the
targets, since transitive linking of static libs is very awkward.
Makes static build happy again (let's see what else breaks)
Renamed bundled Expat headers to avoid any
possibility of accidental including system headers when
using bundled Expat, or vice-versa. Should help with SVN
crashes reported by Thomas.
