In Exiv 0.27.6 there was an overload of ImageFactory::open taking std::wstring and it's gone in 0.28.0

[gh-andre]

Discussed in #2795

I was able to open any file on Windows in 0.27.6, such as hello_🌎.jpg and in 0.28.0 all of the methods for UTF-16 paths are gone, removed in commit 7933ff4. This change makes Exiv2 usable on Windows only for Win-1252 characters, which is what fopen operates on. In order to open files with UTF-16 paths and names, one needs to use _wfopen. Can this change be reverted by any chance? If not, is there any replacement functionality planned? It is a pretty significant regression.

Thank you

[kmilos]

Duplicate of #2637 @piponazo

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