Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2020-05-28' into...

Fixes and improvements for the gitlab-CI:
- Build with other images instead of the broken Debian containers
- Fix building with the latest version of Clang (at least wrt. to
  the gitlab-CI pipeline)
- Add Philippe, Alex and Wainer to the Gitlab-CI section in MAINTAINERS

# gpg: Signature made Thu 28 May 2020 10:16:15 BST
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* remotes/huth-gitlab/tags/pull-request-2020-05-28:
  gitlab-ci: Determine the number of jobs dynamically
  gitlab-ci: Do not use the standard container images from gitlab
  gitlab-ci: Move edk2 and opensbi YAML files to .gitlab-ci.d folder
  GitLab CI: avoid calling before_scripts on unintended jobs
  gitlab-ci: Remove flex/bison packages
  MAINTAINERS: Add Philippe, Alex and Wainer to the Gitlab-CI section
  linux-user: limit check to HOST_LONG_BITS < TARGET_ABI_BITS

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>