Real COMPOUND_TEXT support! I was expecting to have to read the spec

and implement the required subset of ISO-2022 in libcharset, but it
turns out that Xlib provides conversion functions between UTF-8 and
compound text, which are just about ideal for us. So now we can
paste multilingual stuff both to and from emacs21. Rock on.

git-svn-id: svn://svn.tartarus.org/sgt/putty@3193 cda61777-01e9-0310-a592-d414129be87e