[boost] [declval] non-ascii characters in declval.hpp

Subject: [boost] [declval] non-ascii characters in declval.hpp
From: Michel Morin (mimomorin_at_[hidden])
Date: 2012-10-30 12:01:43

Hi Vicente,

`utility/declval.hpp` contains a non-ascii character.
I tried to fix this and make some improvements.

Attached a patch that
* removes a non-ascii character,
* updates references to the C++11 standard,
* fixes obvious oversights
  (e.g. `//  common_type.hpp` --> `//  declval.hpp`),
* cleans up and reformats the comments
  (to the style you used in `add_rvalue_reference.hpp`),
* renames the include guard macro
  (`BOOST_TYPE_TRAITS_EXT_...` --> `BOOST_UTILITY_`).

May I commit it?

Regards,
Michel