Thread: increase the number of cycles of the failing tests.

git-svn-id: http://svn.boost.org/svn/boost/branches/release@86732 b8fc166d-592f-0410-95f2-cb63ce0dd405
Merge documentation and version changes.

Which really should have been merged before the release.


git-svn-id: http://svn.boost.org/svn/boost/branches/release@86738 b8fc166d-592f-0410-95f2-cb63ce0dd405