[MERGE] Rename on Windows is able to change filename case. (#77740)

[Alexander Belchenko]

Alexander Belchenko has voted reject.
Status is now: Vetoed
Comment:
Aaron provide better patch for detection of case-insensitive filesystem.

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C473B1128.9070009%40ukr.net%3E