Mostly to use the images and css files under doc/src instead of
doc/html, usually be deleting the settings in order to use the defaults.
Also add 'boost.root' to some builds in order to fix links which rely on
it.
[SVN r63146]
MPFR Support.
New distributions: laplace, logistic and hypergeometric.
Added PCH support to the Jamfiles for faster build times.
Added C# usage example.
Updated and regenerated docs.
Also fixes#2799 and updates the tests to catch this failure in future.
[SVN r51455]
