This probably doesn't make sense to merge to Core itself due to the added dependencies (rsvg & imagemagick; and icnsutils for Mac) and risks (of installed rsvg mis-rendering the SVG), but posting it here (insta-close) for potential review and/or cherry-picking.
Reuse Windows ICO for Windows installer
gitian: Dependencies for rendering icons
icnsutils is needed on linux/win for generating the .icns in source tarball
Render some icons when possible
Render NSIS wizard sidebar image
(Leaving it open for final branch updates/Travis testing)
Rather than clean generated icons, plan to distribute them
Add 8-bit icon to make builds deterministic again
Travis: Include dependencies for building icons
Merge branch 'svg_icon-0.12.x' into svg_icon
Ok, this seems to be working good now.
Merge #7483 svg_icon-0.12.x
Why the instaclose? If it's good enough for Knots, then why wouldn't it be good enough for Core? And if it's not needed for Core, then why is it needed for Knots?