boost1.53 transition for s-series

[Dmitrijs Ledkovs]

boost1.53 is available in raring/universe, and I'd like to have
boost1.53 as default in the next series, at opening.

The transition tracker is up:
http://people.canonical.com/~ubuntu-archive/transitions/boost1.53.html

Here are the results of test rebuild:
http://people.canonical.com/~xnox/boost1.53/

Two thirds build fine (201), 22 packages need twiddling with
build-depends to try building them and the rest show some.

OK, to go ahead for s-series opening? Please let me know your thoughts.

I hope the recently released gcc4.8 will be default in s-series, thus
together with boost1.53 bringing in excellent C++11 support.

Regards,

Dmitrijs.