mfsRomGetFileSize
mfsRamGetFileSize


Format:	s32 mfsRomGetFileSize(MfsDirID dirID)
	s32 mfsRamGetFileSize(MfsDirID dirID)
Arguments:	dirID	Directory ID of file
Return value:File size (a negative value is an error)
Function:	Obtains file size
Description:	This function obtains and returns the size of the file specified by dirID.

Main errors:
	MFS_ERR_NO		Normal termination
	MFS_ERR_NOTFOUND	Specified directory not found