Merge remote-tracking branch 'rth/axp-next' into staging

# By Richard Henderson
# Via Richard Henderson
* rth/axp-next:
  hw/alpha: Use SRM epoch
  hw/alpha: Drop latch_tmp hack
  exec: Support 64-bit operations in address_space_rw
  hw/alpha: Don't machine check on missing pci i/o
  hw/alpha: Don't use get_system_io

Message-id: 1373840171[email protected]
Signed-off-by: Anthony Liguori <[email protected]>