Add AutoIndex tool from sandbox.
Integrate into Boost.Build.
Add HTML stylesheet options for Indexes.
Add rule to XSL stylesheets to place Indexes in their own HTML CSS class.

svn path=/trunk/tools/auto_index/; revision=72962
Fix regular expressions used.

svn path=/trunk/tools/auto_index/; revision=72974
Fix bad regular expression used for function name scanning.

svn path=/trunk/tools/auto_index/; revision=72986
Fix glitches in docs.
Force AutoIndex to build in release mode when built-on-demand.

svn path=/trunk/tools/auto_index/; revision=73106
Fix build errors from non-C++11 compilers.
Fix scanner to scan refentry's correctly.
Change preferred terms to use bold rather than just emphasis.
Updated tests to match.

svn path=/trunk/tools/auto_index/; revision=73144
Add install to std location.

svn path=/trunk/tools/auto_index/; revision=73741