[Bug 50154] New: Allow using SDL_GAMECONTROLLERCONFIG to configure SDL controller mappings

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50154

Bug ID: 50154
           Summary: Allow using SDL_GAMECONTROLLERCONFIG to configure SDL
                    controller mappings
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: hid
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

As of 5.22, the only way to modify SDL mappings is via a registry key
modification (which also has problems on bug #48545). Other applications that
support SDL allows using environmental variables to set mappings, which would
allow end users to adapt their mappings to the application adhoc rather than
having to modify the registry.