Updated changelog.

[SVN r84334]
Corrected comments.

[SVN r84335]
Refs #8585. Fixed typos in docs and comments.

[SVN r84351]
Made a more thorough check for cxxabi.h presence in case of clang.

[SVN r84353]
Disabled some annoying clang warnings.

[SVN r84354]
Refs. #8614. Width specification now works correctly for strings.

[SVN r84512]
write() no longer asserts when the stream wrapper is not attached to a string. Rather, it behaves more like a standard stream write() when the stream is bad.

[SVN r84514]
Fall back to portable implementation of unhandled_exception_count() on MinGW GCC 4.4 as it seems to not work the same way as the newer versions of GCC do.

[SVN r84515]
Changed attribute name ordering predicate so that non-typical char_traits::compare implementations don't issue buffer overruns.

[SVN r84646]
Added a note regarding setlocale bug in Windows XP with MinGW.

[SVN r84779]
Hopefully, fixed compilation on Solaris 10. Refs #8703.

[SVN r84817]
Raised template instantiation limit for darwin toolset.

[SVN r84828]
Removed unused forward declaration.

[SVN r84867]
Fixed atomic loads and stores on 32 bit targets.

[SVN r84914]
Refs #8730. The once_flag doesn't have initializer now when defined by the BOOST_LOG_ONCE_BLOCK macro. This is done in order to guarantee it is initialized at static initialization stage even on (theoretical) compilers that would not do so if the initializer is present. The BOOST_LOG_ONCE_BLOCK_FLAG macro has been fixed so that it actually uses the flag variable specified in its argument. The flag itself is now a single byte internally in order to minimize the chance of reading an inaccurate value at the fast path. The test robustness improved.

[SVN r84918]
Minor optimizations.

[SVN r84919]
Refactored aligned memory allocation. Added support for Android. Fixes #8815.

[SVN r85020]
Extracted default formatter factory to a separate translation unit. Made all default factories optional, the factories can be disabled with the new config macro BOOST_LOG_WITHOUT_DEFAULT_FACTORIES. Refs #8773, #8786.

[SVN r85031]
Added a changelog entry about BOOST_LOG_WITHOUT_DEFAULT_FACTORIES.

[SVN r85032]
Fixed compilation on MSVC.

[SVN r85033]