Merge remote-tracking branch 'remotes/stsquad/tags/pull-testing-gdbstub-150221-1...

Merge remote-tracking branch 'remotes/stsquad/tags/pull-testing-gdbstub-150221-1' into staging

testing and gdbstub updates:

  - more migration of Travis to GitLab
  - drop Travis container
  - remove last of shippable
  - clean up gdbstub MAINTAINERS
  - remove gdb_get_floatN() helpers
  - don't be quiet about skipping gdb tests

# gpg: Signature made Mon 15 Feb 2021 09:41:32 GMT
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-testing-gdbstub-150221-1:
  tests/tcg: fix silent skipping of softmmu gdb tests
  bswap.h: Remove unused float-access functions
  gdbstub: Remove unused gdb_get_float32() and gdb_get_float64()
  target/ppc: Drop use of gdb_get_float64() and ldfq_p()
  target/m68k: Drop use of gdb_get_float64() and ldfq_p()
  target/sh4: Drop use of gdb_get_float32() and ldfl_p()
  MAINTAINERS: Add gdbstub.h to the "GDB stub" section
  tests/docker: remove travis container
  travis-ci: Disable C++ optional objects on AArch64 container
  .shippable: remove the last bits
  travis.yml: Move the -fsanitize=thread testing to the gitlab-CI
  travis.yml: (Re-)move the --enable-debug jobs
  travis.yml: Move the --enable-modules test to the gitlab-CI
  travis.yml: Move the -fsanitize=undefined test to the gitlab-CI
  travis.yml: Move gprof/gcov test across to gitlab

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