SANE2 standard proposal

This is a proposal for the SANE2 standard

I collected (almost) all suggestion that I found in the sane-devel mailing list. This proposal is not complete, some parts in the sane2-api-todo are still marked as not done. But the most important parts are worked out and included into this SANE2 standard proposal:

Several details of this proposal are based an a lot of discussions with Andreas Beck who already spent a lot of time and work into the SANE-1 standard.
- Thanks a lot for your work and help Andreas! -

I will not have much time to work on the proposal the next time. But I think it already is a good base for discussion, please also take a look at the todo list. Suggestions, patches and comments are welcome.

Feedback to: Oliver Rauch