klighd.piccolo +.freehep: updated FreeHEP-based SVG generator s.t. it compensates the machines display's zoom scale setting, as the font size computation is subjected to that setting, is related to KIPRA-2019 and KIPRA-1534
for this SVG generator we stick to SWT based font dimensioning in order to achieve consistency among text and non-text figures;
since there's lots of rounding involved because of old-style int-based APIs this compensation is just a compromise...
