Relicense GPL-2.0-only files

Relicensing allowed: gplv23 lgplv23 lgplv2+ +eV gplv2+
2 jobs for master in 10 minutes and 32 seconds (queued for 7 minutes and 49 seconds)
Status Job ID Name Coverage
  Build
passed #65693
build_clazy_clang_tidy

00:08:33

passed #65692
linux kf5-qt5 qt5.12

00:04:47

23.0%