A few small updates to the hostname verification.
A few small updates to the hostname verification.

Fixes the case where a raw IPv6 address would be rejected as not
 looking like a FQDN.
Also simplifies the wildcard comparison a little.

xiph/opusfile,SmartWalkieOrg/opusfile,youfearm3/opusfile,gcp/opusfile,xiph/opusfile,SmartWalkieOrg/opusfile,gcp/opusfile,SmartWalkieOrg/opusfile,youfearm3/opusfile,xiph/opusfile,gcp/opusfile