Internationalize the output of lstopo

[bgoglin]

Object type names and memory size units

[bgoglin]

Instead of integrating translation, we may ease the process of replacing type names etc in the output. subtype replaces all type in the graphical output... except for os devices (and group/misc if they have a name). I've been asked to provide a way to remove type names entirely. This could part of the new option.

We'd need a way to translate units too.