[luatex] LuaTeX file almost 2.5x bigger

[Arthur Reutenauer]

> (LuaTeX has another difference: every line of text is a separate line of code in
> the PDF, whereas pdfTeX produces very long lines; the Lua way is definitely more
> readable, although I don't spend my time reading PDFs.)

  As you know, this makes no difference at all for the file size since
it's only replacing ASCII 0x20, a single byte, by ASCII 0x0a, another
single byte.

	Arthur