Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging

Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging

* add --enable/--disable-libgio to configure (Denis)
* small fixes (Pavel, myself)
* fuzzing update (Alexander)

# gpg: Signature made Tue 16 Mar 2021 18:30:38 GMT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini-gitlab/tags/for-upstream:
  qemu-timer: allow freeing a NULL timer
  hw/i8254: fix vmstate load
  scsi: fix sense code for EREMOTEIO
  Revert "accel: kvm: Add aligment assert for kvm_log_clear_one_slot"
  configure: add option to explicitly enable/disable libgio
  fuzz: move some DMA hooks
  fuzz: configure a sparse-mem device, by default
  memory: add a sparse memory device for fuzzing
  fuzz: add a am53c974 generic-fuzzer config
  fuzz: add instructions for building reproducers
  fuzz: add a script to build reproducers
  fuzz: don't leave orphan llvm-symbolizers around
  fuzz: fix the pro100 generic-fuzzer config
  MAINTAINERS: Cover fuzzer reproducer tests within 'Device Fuzzing'
  tests/qtest: Only run fuzz-virtio-scsi when virtio-scsi is available
  tests/qtest: Only run fuzz-megasas-test if megasas device is available

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