\pdffilesize and spaces

[Karl Berry]

    #if defined(XeTeX)
         filename = gettexstring(s);
    #else
         filename = makecfilename(s);
    #endif

The comment on gettexstring is:

  #ifdef XeTeX /* the string pool is UTF-16 but we want a UTF-8 string */
  string
  gettexstring (strnumber s)

And then it plays around with the bytes.
So evidently we can't just use gettexstring.

However, I don't see where spaces get removed in makecfilename.
Looks like only quotes. -k