Merge branch 'next' into shieldscalefix

.gitlab-ci.yml

.gitlab/ci/jobs/alpine-3-gcc-dedicated.yml

.gitlab/ci/jobs/alpine-3-gcc.yml

.gitlab/ci/jobs/batocera-arm64.yml

.gitlab/ci/jobs/debian-oldstable-amd64.yml

.gitlab/ci/jobs/debian-oldstable-arm64.yml

.gitlab/ci/jobs/debian-stable-amd64.yml

.gitlab/ci/jobs/debian-stable-arm64.yml

.gitlab/ci/jobs/debian-stable-clang-amd64.yml

.gitlab/ci/jobs/debian-stable-i386.yml

.gitlab/ci/jobs/debian-testing-clang-amd64.yml

.gitlab/ci/jobs/debian-testing-gcc-amd64.yml

.gitlab/ci/jobs/macos-arm64.yml

.gitlab/ci/jobs/macos-x86_64.yml

.gitlab/ci/jobs/windows-x64.yml

.gitlab/ci/jobs/windows-x86.yml

.gitlab/ci/templates/srb2ci.yml

doc/specs/udmf_srb2.txt

extras/conf/udb/Includes/SRB222_common.cfg

extras/conf/udb/Includes/SRB222_linedefs.cfg