This function adds a new file/dir to the current DirMaster list. It is a very low level function that should only be used in special cases.
Pointer to a valid DirMaster instance
The complite path and file name of the file/dir you intend to add.
Just the file name of the file you intend to add.
The stat structure filled with the info of the file you intend to add. This structure must be filled before calling this function.