mfsRamResizeFile


Format:	s32 mfsRamResizeFile(MfsDirID dirID, s32 size)
Arguments:	dirID		Directory ID of file
	size		File size
Return value:Error
Function:	Changes file size
Description:	This function changes the size of the file specified by dirID.  The file is either enlarged or a portion of the file is truncated depending on the value of size and the initial size of the file.  
When the file is enlarged, the new area data is undefined.  When the file is truncated, the data following the new end of the file is lost.

Main errors:
	MFS_ERR_NO	Normal termination
	MFS_ERR_NOTFOUND Specified directory not found
	MFS_ERR_PROTECT	Write protected
			The file attribute is write protected, or the volume attribute is write protected, or the parent directory is write protected.