Reviewed-by: alanb, igerasim

8040810: Uninitialised memory in jdk/src/windows/native/java/net: net_util_md.c, TwoStacksPlainSocketImpl.c, TwoStacksPlainDatagramSocketImpl.c, DualStackPlainSocketImpl.c, DualStackPlainDatagramSocketImpl.c
Summary: explicitly initialze local function variables
Reviewed-by: alanb

Summary: updated files with 2011, 2012 and 2013 years according to the file's last updated date
Reviewed-by: tbell, lancea, chegar

Reviewed-by: alexsch, smarks

8017271: Crash may occur in java.net.DualStackPlainSocketImpl::initIDs due to unchecked values returned from JNI functions
Reviewed-by: alanb, khazra

Summary: Enable exclusive binding of ports on Windows
Reviewed-by: alanb, chegar, ahgross

Reviewed-by: darcy, weijun