Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20170108' into staging

TCG host support for mips64

# gpg: Signature made Sun 08 Jan 2017 17:52:17 GMT
# gpg:                using RSA key 0xAD1270CC4DD0279B
# gpg: Good signature from "Richard Henderson <[email protected]>"
# gpg:                 aka "Richard Henderson <[email protected]>"
# gpg:                 aka "Richard Henderson <[email protected]>"
# Primary key fingerprint: 9CB1 8DDA F8E8 49AD 2AFC  16A4 AD12 70CC 4DD0 279B

* remotes/rth/tags/pull-tcg-20170108:
  translate-all: Avoid -Werror=switch-bool
  tcg-mips: Adjust qemu_ld/st for mips64
  tcg-mips: Adjust calling conventions for mips64
  tcg-mips: Add tcg unwind info
  tcg-mips: Adjust prologue for mips64
  tcg-mips: Adjust load/store functions for mips64
  tcg-mips: Adjust move functions for mips64
  tcg-mips: Add bswap32u and bswap64
  tcg-mips: Support 64-bit opcodes
  tcg-mips: Add mips64 opcodes
  tcg-mips: Move bswap code to a subroutine

Signed-off-by: Peter Maydell <[email protected]>