nixpkgs

cef17761 - libidn2: 2.0.2 -> 2.0.3

libidn2: 2.0.2 -> 2.0.3 See http://lists.gnu.org/archive/html/info-gnu/2017-07/msg00008.html for release information (cherry picked from commit e420be7ab5febf16a6e5612b0ce31b37d9587b98)