FIX: [mysql] fix database export (fixes #14843)
Merge pull request #4012 from koying/quickpr

FIX: [mysql] fix database export (fixes #14843)
[win32/nfs] - bump windows version of nfs 1.6.2 for windows (forced __stat64 struct on windows as done on all other platforms via FILE_OFFSET_BITS=64)
[win32/nfs] - force usage of struct __stat64 on windows as done implicitly for all other platforms (due to FILE_OFFSET_BITS=64) - this fixes bad stat info which showed up on windows 8 64