stderr from the underlying git process was not being
redirected/ignored properly, now somewhat more. If EOF is encountered
when asking for the last update date it is shown as "never".
When viewing the status of your repositories you will now see also
when your last update to the upstream branch was. If you have not
fetched or pulled the latest changes from your upstream, this will not
be accurate.
Now, when XGD_DATA_HOME is empty, it should default to `~/.gitto/' for
`data-dir', the old way didn't quite work since the `mkdir' function
doesn't translate `~/' to HOME.