Merge remote-tracking branch 'remotes/thibault/tags/samuel-thibault' into staging

Merge remote-tracking branch 'remotes/thibault/tags/samuel-thibault' into staging

slirp updates

# gpg: Signature made Sat 15 Jul 2017 13:30:03 BST
# gpg:                using RSA key 0xB0A51BF58C9179C5
# gpg: Good signature from "Samuel Thibault <[email protected]>"
# gpg:                 aka "Samuel Thibault <[email protected]>"
# gpg:                 aka "Samuel Thibault <[email protected]>"
# gpg:                 aka "Samuel Thibault <[email protected]>"
# gpg:                 aka "Samuel Thibault <[email protected]>"
# gpg:                 aka "Samuel Thibault <[email protected]>"
# gpg:                 aka "Samuel Thibault <[email protected]>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 900C B024 B679 31D4 0F82  304B D017 8C76 7D06 9EE6
#      Subkey fingerprint: AEBF 7448 FAB9 453A 4552  390E B0A5 1BF5 8C91 79C5

* remotes/thibault/tags/samuel-thibault:
  slirp: Handle error returns from sosendoob()
  slirp: Handle error returns from slirp_send() in sosendoob()
  slirp: fork_exec(): Don't close() a negative number in fork_exec()
  slirp: use DIV_ROUND_UP

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