-Put the optimized soreceive_stream() under a compile time option called

TCP_SORECEIVE_STREAM for the time being.

Requested by:	brooks

Once compiled in make it easily switchable for testers by using a tuneable
 net.inet.tcp.soreceive_stream
and a corresponding read-only sysctl to report the current state.

Suggested by:	rwatson

MFC after:	2 days
-This line, and those below, will be ignored--
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> PR:            If a GNATS PR is affected by the change.
> Submitted by:  If someone else sent in the change.
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M    sys/conf/options
M    sys/kern/uipc_socket.c
M    sys/netinet/tcp_subr.c
M    sys/netinet/tcp_usrreq.c

0 files changed, 0 insertions, 0 deletions