SVG 1.1 paths BNF errata

Hi!

Not that this constitutes any major BNF flaw, but the moveto-argument-sequence
has a rather fishy cut'n'paste:o-ish reference to lineto-argument-sequence for
no apparent reason -- quoting relevant parts:

[http://www.w3.org/TR/SVG/paths.html#PathDataBNF]

moveto:
    ( "M" | "m" ) wsp* moveto-argument-sequence
moveto-argument-sequence:
    coordinate-pair
    | coordinate-pair comma-wsp? lineto-argument-sequence
                                 ^^^^
lineto:
    ( "L" | "l" ) wsp* lineto-argument-sequence
lineto-argument-sequence:
    coordinate-pair
    | coordinate-pair comma-wsp? lineto-argument-sequence

It was probably intended to read moveto-argument-sequence there, or, if not,
the grammar for moveto: could be rid of its moveto-argument-sequence rule and
refer to lineto-argument-sequence rule right away, as in:

moveto:
    ( "M" | "m" ) wsp* lineto-argument-sequence

(Though I presume that kind of "optimisation" is not intentional, or it would
have been applied in lots of different other places throughout the BNF.)

-- 
 / Johan Sundström (Lysator Academic Computer Society)