Various CompareString fixes

[Alexandre Julliard]

Dmitry Timoshkov <dmitry at baikal.ru> writes:

> Changelog:
>     Dmitry Timoshkov <dmitry at codeweavers.com>
>     Move CompareString implementation to libwine_unicode,
>     add a bunch of CompareString tests.

This causes a lot of breakage in the shlwapi string tests. Some of
these may well be because the shlwapi implementation depends on a
broken CompareString, but others look suspicious. For instance the
StrChrA test fails because CompareString says "-" and "'" are equal,
that doesn't sound right at all.

-- 
Alexandre Julliard
julliard at winehq.com