[layout tweaks] 3. ragged last system right #true

[Germain G. Ivanoff-Trinadtzaty]

\version "2.11.26"

Dear all,

In the \paper block, we can use :
ragged-bottom        to stretch down all pages
ragged-last-bottom to stretch down last page
ragged-right            to stretch right all systems

Is there a way to stretch all systems right BUT the very last one ?
I didn't find any trick in docs nor in mail archives yet. But still looking 
for.

Thanks,
Germain