[Info-vax] Get installed image version in use by process

[snake]

> Normaly you only see one single entry with no process
> number for installed images. Maybe it's a little different
> when there are old versions hanging around...

Indeed, you will see 2 entries for that image, but with process
000000.
So, at that moment you know that 2 versions of that image are in use,
but you cannot know which processes are using which image version...