Renames a folder.
The path of the folder you want to rename.
The new name for the folder.
Renames the file "Rename" to "Renamed" on Mac.
CNSMenu_Folder_Rename( "/Images/Rename" ; "Renamed" )
Renames the folder "rename" to "renamed" on Windows.
CNSMenu_Folder_Rename( "c:\images\rename" ; "renamed" )