kernel32: Add UTF-7 support

[Alex Henrie]

Hi all,

Could I get some feedback on
http://source.winehq.org/patches/data/85898 ? It was marked "Rejected"
a week ago without explanation.

Most of the code was authored by Katayama Hirofumi, whose patches have
been accepted into Wine before. He gave permission to use his code
under the LGPL at http://bugs.winehq.org/show_bug.cgi?id=27388

What more needs to be done before this patch can be accepted?

-Alex