[Bug 33447] New: Wine GUI on Mac display Traditional Chinese instead when host language is Simplify Chinese

http://bugs.winehq.org/show_bug.cgi?id=33447

Bug #: 33447
           Summary: Wine GUI on Mac display Traditional Chinese instead
                    when host language is Simplify Chinese
           Product: Wine
           Version: 1.5.28
          Platform: x86
        OS/Version: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

Step to reproduce:

1. Install Wine from macport, or build from wine-git

2. Create a fresh MacOS user, set Mac UI language to Simplified Chinese.
$ locale
LANG="zh_CN.UTF-8"
LC_COLLATE="zh_CN.UTF-8"
LC_CTYPE="zh_CN.UTF-8"
LC_MESSAGES="zh_CN.UTF-8"
LC_MONETARY="zh_CN.UTF-8"
LC_NUMERIC="zh_CN.UTF-8"
LC_TIME="zh_CN.UTF-8"
LC_ALL=

3. start winecfg/regedit/notepad

Expect result:
The default GUI language should be Simplified Chinese

Actual result:
The default GUI language is Traditional Chinese. I've tried many way to
modified locale related environment value, but still can't find any way to
display Simplified Chinese in Wine GUI. locale things on Mac seems different as
Linux.
+font log show that Wine do have the correct codepage (936 for Simplified
Chinese, 950 for Traditional Chinese), not sure why it still display
Traditional Chinese.

Will attach some screenshot.