ncat should try connecting to all resolved addresses, not only the first one

[Jaromir Koncicky <jkoncick () redhat com>]

This problem was already reported in Red Hat Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=978964
As I described in my comment, ncat should try connecting to another address resolved by getaddrinfo(), if connecting to 
one fails.
In current situation, I cannot connect to a host whose hostname is resolved to more addresses, the first one resolved 
address is IPv6 and I cannot connect through IPv6.
I'm going to make a patch which would do this.
If you have anything to tell me or suggest about this, tell me. I will start making a patch and if I succeed, I'll post 
it here.
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