[boost] Program options library added to CVS

The program options library is now in CVS. It's integrated with regression tests, and BoostBook generation. I've also updated top-levle index.htm. The regression test results can be seen at: http://tinyurl.com/3bdvp http://tinyurl.com/2x6jo The windows results are not as good as I would have hoped -- though a bit better than 100% of failures I had after initial checking. I'll look into remaining intel problem but borland and mertowerks failures are complete mistery for me -- I'd ask about them separately. Thanks again to everyone who helped with library developement! - Volodya