...rosoft#1812 

...s well. microsoft#1812 

...g with llvm. microsoft#1812 

...tion function of print/format through the specializations leading to infinite recursion. Fixes streams_test broken by the char_traits fixes. Unfortunately reuires some extra string copying because the std streams library really really doesn't work well on anything but char (signed) types on gcc and llvm, so general advice seems to be to convert to char on the way in and back to unsigned on the way out if one really need the std streams library to work on unsigned types. microsoft#1812