Merge branch 'linux-user-for-upstream' of git://git.linaro.org/people/rikuvoipio...

Merge branch 'linux-user-for-upstream' of git://git.linaro.org/people/rikuvoipio/qemu

* 'linux-user-for-upstream' of git://git.linaro.org/people/rikuvoipio/qemu:
  linux-user: register align p{read, write}64
  linux-user: ppc: mark as long long aligned
  tcg: Remove TCG_TARGET_HAS_GUEST_BASE define
  configure: Remove unnecessary host_guest_base code
  linux-user: If loading fails, print error as string, not number
  linux-user: Fix siginfo handling
  alpha-linux-user: Fix sigaltstack structure definition
  linux-user: Implement gethostname
  linux-user: Perform more checks on iovec lists
  linux-user: fix multi-threaded /proc/self/maps
  linux-user: fix statfs