Merge branch 'sendrecvmsg_rebase_55' into PHP-5.5

Merge branch 'sendrecvmsg_rebase_55' into PHP-5.5

* sendrecvmsg_rebase_55: (31 commits)
  Fix multicast.c not defining errno on Windows
  Fix non-Windows build
  send/recvmsg() support for Windows
  Remove some pre-vista code
  Revert "Payload of HOPLIMIT/TCLASS are 8-bit"
  Ensure memory is initialized
  Payload of HOPLIMIT/TCLASS are 8-bit
  Fix buf in string -> int conv.
  Build fixes; accept names for if_index
  Refactoring: move stuff to new conversions.c
  Support sticky IPV6_PKTINFO
  Rename some functions for consistency
  Destroy ancillary registry on shutdown
  Move some multicast stuff to multicast.c
  Fix mcast_ipv6_send test
  Check return of fstat()
  Fix build on Mac OS X
  Register extra MSG_* constants
  Add test for CMSG_RIGHTS
  Add test for CMSG_CREDENTIALS message
  ...