Ratio: version 2: Added prefix/symbol functions ratio_io.

svn path=/trunk/boost/ratio/; revision=80317
Ratio: remove outdated pdf doc.

svn path=/trunk/libs/ratio/; revision=80318
Ratio: fixes parially 7478

svn path=/trunk/boost/ratio/; revision=80896
Ratio: remove invalid link in doc

svn path=/trunk/libs/ratio/; revision=80916
Ratio: Temporary definition of BOOST_NO_CXX11_U16STRING and BOOST_NO_CXX11_U32STRING waiting for their definition on Boost.Config

svn path=/trunk/boost/ratio/; revision=80946
Ratio: Temporary definition of BOOST_NO_CXX11_U16STRING and BOOST_NO_CXX11_U32STRING waiting for their definition on Boost.Config

svn path=/trunk/libs/ratio/; revision=80947
Ratio: silence warning shift count negative or too big, undefined behavior

svn path=/trunk/boost/ratio/; revision=81114
Removed usage of deprecated macros in Boost.Ratio

svn path=/trunk/libs/ratio/; revision=81567
Ratio: Update history

svn path=/trunk/libs/ratio/; revision=81796
Ratio: warning removal

svn path=/trunk/libs/ratio/; revision=82015