Examples extracted from previous docs separated out, annotated with Quickbook snippets for use with new docs, and run with the new jamfile.

svn path=/trunk/libs/circular_buffer/; revision=84650
Removed log file added by mistake.

svn path=/trunk/libs/circular_buffer/; revision=84651
Added typical output for use with new version of docs.

svn path=/trunk/libs/circular_buffer/; revision=84652