Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2019-05-02' into...

- Move qtest accel code to accel/qtest.c, get rid of AccelClass->available
- Test TCG interpreter in gitlab-ci
- Small improvements to the configure script
- Use object_initialize_child in hw/pci-host

# gpg: Signature made Thu 02 May 2019 17:07:34 BST
# gpg:                using RSA key 2ED9D774FE702DB5
# 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-2019-05-02:
  hw/pci-host: Use object_initialize_child for correct reference counting
  configure: Relax check for libseccomp
  configure: Remove old *-config-devices.mak.d files when running configure
  configure: Add -Wno-typedef-redefinition to CFLAGS (for Clang)
  accel: Remove unused AccelClass::available field
  qtest: Don't compile qtest accel on non-POSIX systems
  qtest: Move accel code to accel/qtest.c
  gitlab-ci.yml: Test the TCG interpreter in a CI pipeline

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