Update textproc/hevea to 2.35.0

Changelog:
version 2.35
     * Release
version 2.34+02
     * Some petty optimisation in text output (replace ' '+ '\n' by '\n').
     * Correct bug in text mode (012 by Florian Angeletti).
       On bad combination of indentation and version 2.34+01
     * Correct bug in text mode (012 by Florian Angeletti).
       On bad combination of indentation and underlining.
version 2.34
     * Add command \formatlinks for greater control over navigation links.
version 2.33
     * Compatibility from 4.02.3 to 4.10.0
version 2.32
     * Introduce SVG arrows, contribution by Florian Angeletti
version 2.31
     * Correct doc typos.
version 2.30
     * Better error message when several \documentclass are present.
version 2.29+5
version 2.29+4
version 2.29+3
version 2.29+2
     * mathjax 'automatic' support
version 2.29+1
     * mathjax support
version 2.29
     * Correct bug around double quotes. Notice that the "plain" status
       of double quotes is no expansion, by contrast with all other special
       characters.
version 2.28
     * lstlisting: find files lstlang?.sty in path (as latex does).
version 2.27
     * info: Add initial capitals for some words
       (workaround against (reported) info reader v 6.0 bug
version 2.26
     * add a warning in case of missing \end{document}
     * cleveref.hva patch (removes extra white space), credit: Tim Bourke.
version 2.25
     * Oups !! Forgot to add svg.hva, corrected.
version 2.24
     * Add svg.hva style file, to produce svg images.
     * More robust build.


(tonio)