Updating version to 1.55

git-svn-id: http://svn.boost.org/svn/boost/branches/release@85043 b8fc166d-592f-0410-95f2-cb63ce0dd405
Merge fix for C++11 compilation error

git-svn-id: http://svn.boost.org/svn/boost/branches/release@85045 b8fc166d-592f-0410-95f2-cb63ce0dd405
Spirit: Merging from trunk

git-svn-id: http://svn.boost.org/svn/boost/branches/release@85046 b8fc166d-592f-0410-95f2-cb63ce0dd405
Fully merge boostbook from trunk.

- Optionally use section ids as a class name for CSS styling, by using the
  `boost.section.class.add.id` parameter.
- Add the `role` attribute to the class for `section` and `simplesect`.
- Update the single html template to be closer to the chunked html.
- Fix the encoding for single page html.
- Add option to permit single depth TOC at chapter level, while maintaining
  multi-depth TOC at subsequent levels. Use the `boost.noexpand.chapter.toc`
  parameter.
- Add some C++11 keywords to the syntax highlighter.
- Support the fixed-length `$Date:: $` subversion keyword in last-revision
  library attributes.


git-svn-id: http://svn.boost.org/svn/boost/branches/release@85047 b8fc166d-592f-0410-95f2-cb63ce0dd405
Merge unordered from trunk.

Add `BOOST_NOEXPECT` to:

- Move constructors (when appropriate)
- Destructors
- Iterators

Also, fix some misleading documentation about the containers' move support.


git-svn-id: http://svn.boost.org/svn/boost/branches/release@85048 b8fc166d-592f-0410-95f2-cb63ce0dd405
Merge iostreams - fix rethrowing an exception.


git-svn-id: http://svn.boost.org/svn/boost/branches/release@85049 b8fc166d-592f-0410-95f2-cb63ce0dd405
Merge quickbook. Starting 1.6 alpha, plus some 1.7 development.


git-svn-id: http://svn.boost.org/svn/boost/branches/release@85050 b8fc166d-592f-0410-95f2-cb63ce0dd405