Support for querying wallet address using DNS

In addition to querying wallet address of registered webwallet users, Talleo Project has added support for querying wallet address using DNS TXT records. "@" in e-mail address is first replaced with "." and then the TXT record is queried. If the entry in TXT record starts with "talleo:", the prefix is removed and the remaining text is returned as wallet address. Any malformed entries will be automatically skipped.