vars/buildDebianPackage.groovy: No need to checkout scm in arch-specific folders. Jenkins handles those workspaces separately already on the filesystem.

vars/buildDebianPackage.groovy: Checkout SCM via pipeline script at correct location (this lets us ignore the default GIT_HOST in x2go-sbuild-deb-package and retrieve code from GitLab).

This reverts commit b4cc68a7.

Revert "vars/buildDebianPackage.groovy: Checkout SCM via pipeline script at correct location (this lets us ignore the default GIT_HOST in x2go-sbuild-deb-package and retrieve code from GitLab)."

This reverts commit d9a79b91.

Revert "vars/buildDebianPackage.groovy: Fix syntax error, try using parameters {} block for arch and skip_arch vars."

This reverts commit 82862817.

Revert "Revert "vars/buildDebianPackage.groovy: Fix syntax error, try using parameters {} block for arch and skip_arch vars.""

This reverts commit 3dca143f.

This reverts commit 4c218d26.

This reverts commit f969facd.

This reverts commit 5e8d5251.

Revert "vars/buildDebianPackage.groovy: Using yet another approach (environment is too global and affects other parallel builds)."

This reverts commit ae53d2e2.

This reverts commit 15cc7e1d.

vars/buildDebianPackage.groovy: Using yet another approach (environment is too global and affects other parallel builds).

Revert "vars/buildDebianPackage.groovy: Fix syntax error, try using parameters {} block for arch and skip_arch vars."

This reverts commit 82862817.

vars/buildDebianPackage.groovy: Fix syntax error, try using parameters {} block for arch and skip_arch vars.

vars/buildDebianPackage.groovy: Checkout SCM via pipeline script at correct location (this lets us ignore the default GIT_HOST in x2go-sbuild-deb-package and retrieve code from GitLab).

vars/buildDebianPackage.groovy: Attempt at using env.CHANGE_BRANCH for detecting the real branch name (env.BRANCH_NAME contains the MR-<n> only).

vars/buildDebianPackage.groovy: Build packages in owned directory structure (which gets cleaned up after every build).

vars/buildDebianPackage.groovy: Use correct fine-grain control variables for i386-/amd64-only builds.