Merge remote-tracking branch 'remotes/aurel/tags/pull-target-sh4-20171218' into staging

Merge remote-tracking branch 'remotes/aurel/tags/pull-target-sh4-20171218' into staging

Queued target/sh4 patches

# gpg: Signature made Mon 18 Dec 2017 22:36:42 GMT
# gpg:                using RSA key 0x1388C0F899E8336B
# gpg: Good signature from "Aurelien Jarno <aurelien@aurel32.net>"
# gpg:                 aka "Aurelien Jarno <aurelien@jarno.fr>"
# gpg:                 aka "Aurelien Jarno <aurel32@debian.org>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 7746 2642 A9EF 94FD 0F77  196D BA9C 7806 1DDD 8C9B
#      Subkey fingerprint: 52BC 8695 BE34 F90A D7D4  0CB8 1388 C0F8 99E8 336B

* remotes/aurel/tags/pull-target-sh4-20171218:
  target/sh4: Convert to DisasContextBase
  target/sh4: Do not singlestep after exceptions
  target/sh4: Convert to DisasJumpType
  target/sh4: Use cmpxchg for movco when parallel_cpus
  target/sh4: fix TCG leak during gusa sequence
  target/sh4: add missing tcg_temp_free() in _decode_opc()

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