[Bug 48955] New: Use xdg basedir spec

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48955

Bug ID: 48955
           Summary: Use xdg basedir spec
           Product: Wine
           Version: unspecified
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html

Instead of ~/.wine, configuration should be in the $XDG_CONFIG_HOME/wine/ and
cache (safely-deletable files) should be in $XDG_CACHE_HOME/wine/. The big
boxes files should be in the $XDG_DATA_HOME/wine/.