Merge remote-tracking branch 'remotes/lalrae/tags/mips-20141103' into staging

* remotes/lalrae/tags/mips-20141103: (34 commits)
  target-mips: add MSA support to mips32r5-generic
  disas/mips.c: disassemble MSA instructions
  target-mips: add MSA MI10 format instructions
  target-mips: add MSA 2RF format instructions
  target-mips: add MSA VEC/2R format instructions
  target-mips: add MSA 3RF format instructions
  target-mips: add MSA ELM format instructions
  target-mips: add MSA 3R format instructions
  target-mips: add MSA BIT format instructions
  target-mips: add MSA I5 format instruction
  target-mips: add MSA I8 format instructions
  target-mips: add MSA branch instructions
  target-mips: add msa_helper.c
  target-mips: add msa_reset(), global msa register
  target-mips: add MSA opcode enum
  target-mips: stop translation after ctc1
  target-mips: remove duplicated mips/ieee mapping function
  target-mips: add MSA exceptions
  target-mips: add MSA defines and data structure
  target-mips: enable features in MIPS64R6-generic CPU
  ...

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