[sctp-dev] Request for Review: 6916922

[Christopher Hegarty -Sun Microsystems Ireland]

see discussion on sctp-dev:
   http://mail.openjdk.java.net/pipermail/sctp-dev/2010-January/000151.html

Essentially, on Linux SO_SNDBUF/SO_RCVBUF aren't symmetric. This stems 
from additional socket structures in the send and receive buffers. 
Net_GetSockOpt handles this by dividing the retrieved values by 2.

CR 6916922: SO_RCVBUF & SO_SNDBUF returns twice the value set

Webrev:
http://cr.openjdk.java.net/~chegar/6916922/webrev.0/webrev/

-Chris.