Convert paths to native in readdir function so that network drive can be open correctly.
Fix the comment.
fixes single file selection mode on Windows
Merge pull request #422 from adobe/jeff/fix-6840

Ensure that filenames returned when allowMultipleSelection = false are properly canonicalized
Merge pull request #421 from adobe/rlim/file-path-issue

Convert file paths to native paths before calling FindFirstFile.
Merge branch 'master' into couzteau/write-png