mfsRomGetParentDir
mfsRomGetParentDir


Format:	s32 mfsRomGetFileParentDir(MfsDirID dirID)
	s32 mfsRamGetFileParentDir(MfsDirID dirID)
Arguments:	dirID	Directory ID of file (directory)
Return value:Directory ID of parent directory (a negative value is an error)
Function:	Obtains parent directory
Description:	This function obtains and returns the directory ID of the directory that is one level higher and to which the file (directory) specified by dirID belongs.

Main errors:
	MFS_ERR_NO	Normal termination
	MFS_ERR_NOTFOUND	Specified directory not found