It's probably well past time for this: change PuTTY's default

It's probably well past time for this: change PuTTY's default
character set configuration to UTF-8, on both Windows and Unix, and
reorganise the dropdown lists in the Translation menu so that UTF-8
appears at the top (and Unix's odd "use font encoding" is relegated to
the bottom of the list like the special-purpose oddity it is).

git-svn-id: http://svn.tartarus.org/sgt/putty@9843 cda61777-01e9-0310-a592-d414129be87e