Upgrade to boost 1.59?

[Jean-Marc Lasgouttes]

I think we should upgrade our local copy of boost to 1.59 before alpha 
(or at least before beta).

Is the procedure documented somewhere?
Also, what can we do to hide the warnings related to auto_ptr? If we are 
out of ideas, I propose to compile with -Wno-deprecated-functions in 
C++11 mode.

JMarc