Patch ping

[Jakub Jelinek]

Hi!

I'd like to ping the restrict_based_on_field attribute patch:
http://gcc.gnu.org/ml/gcc-patches/2011-10/msg00135.html

We currently don't do cast restricts and even if we do them again,
as this attribute doesn't make the type __restrict it wouldn't
affect those, it only affects parameters, if they are __restrict
themselves what they point to, and global vars.

IMHO it would be a pitty not to improve generated code for std::vector
for 4.7.

	Jakub