Merge 86787 from trunk: Fix: shared libraries are in .../lib on most platforms and only in .../bin on Windows.

git-svn-id: http://svn.boost.org/svn/boost/branches/release@86790 b8fc166d-592f-0410-95f2-cb63ce0dd405
Merge utility documentation.

- Fixed duplicate anchors.
- Add BOOST_EXPLICIT_OPERATOR_BOOL documentation.
- Rebuild some of the utility documentation.


git-svn-id: http://svn.boost.org/svn/boost/branches/release@86797 b8fc166d-592f-0410-95f2-cb63ce0dd405