Adjust to latest libimobiledevice API changes
Update gnome-autogen.sh to newer version

The older one seemed to have issues with recent automakes
Add model info comment about black nano 4g
Remove obsolete use of GValueArray

It has been superseded by direct GValueArray use.
Don't use g_type_init() with glib >= 2.36

It's deprecated starting from 2.36 and will trigger a deprecation
warning. It's called automatically when needed.