Merge from trunk:

* bad_any_cast exception is now visible across modules (fixes #8751)
* portion of optimizations and tests for rvalues
* added ability to call any_cast<T&&> (which is equivalent to std::move(any_cast<T&>))
* added clear() member function
* added missing BOOST_NOEXCEPT

[SVN r85151]

libs/any

@@ -1 +1 @@
-Subproject commit 35dc9976ab34451ae48f4a740652baf52fd71a98
+Subproject commit bba46fc277a8270f1d7738d2b1ff766663b38d32