[boost] Boost.Test documentation update; alpha release

Hi, I've finally been able to produce alpha release of completely reworked BoostBook based documentation for Boost.Test library. It's still not ready for release and I expect significant changes in both L&F (once I apply latest IBD based style) and content (some articles still missing). But it's in a shape close to what I would like it to be. I would really appreciate any comments to both content (language including) and style. I realize it might not be small undertaking so if you have time for just part of it, please post comments as well. The release is available here: patmedia.net/~rogeeff/html/index.html in patmedia.net/~rogeeff/src you can find sources. Thank you, Gennadiy