Most icons themes just copy a bunch of files from the source to the
installation directory and therefore work perfectly fine with
stdenvNoCC.
All themes in pkgs/data/icons that still use stdenv after this change
are failing to build with stdenvNoCC.
The package debian/copyright states Attribution-ShareAlike 3.0 Unported
(CC BY-SA 3.0) which is cc-by-sa-30, was wrongly cc-by-nc-sa-30 which is
unfree
* pkgs: refactor needless quoting of homepage meta attribute
A lot of packages are needlessly quoting the homepage meta attribute
(about 1400, 22%), this commit refactors all of those instances.
* pkgs: Fixing some links that were wrongfully unquoted in the previous
commit
* Fixed some instances
