* ext/socket/rubysocket.h (rsock_discard_cmsg_resource): add
  msg_peek_p argument for the declaration.

* ext/socket/ancdata.c (discard_cmsg): add msg_peek_p argument.
  assume FreeBSD, NetBSD and MacOS X doesn't generate passed fd
  when MSG_PEEK. 
  (rsock_discard_cmsg_resource): add msg_peek_p argument.
  (bsock_recvmsg_internal): call rsock_discard_cmsg_resource with
  msg_peek_p argument.

* ext/socket/unixsocket.c (unix_recv_io): call
  rsock_discard_cmsg_resource with msg_peek_p argument.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@32638 b2dd03c8-39d4-4d8f-98ff-823fe69b080e