Wrong name is displayed when running ggh

[rmilesson]

Hi!

This little project is awesome. Just found it through the Console newsletter.

However, I found that it shows the wrong name for a session if there's several entries in ~/.ssh/config with the same HostName. ggh just picks the last entry matching the HostName for the session.

ggh should check if the User matches as well to fix this.

Here's an image demonstrating the problem:

Here's a snippet from ~/.ssh/config that could be used to debug the issue:

Host correct
	HostName non-unique-hostname
	User correct

Host incorrect
	HostName non-unique-hostname
	User incorrect