hg: jdk/sandbox: 8145635: Add TCP_QUICKACK socket option

[chris.hegarty at oracle.com]

Changeset: fbfe06b70e16
Author:    vtewari
Date:      2017-11-13 14:03 +0530
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/fbfe06b70e16

8145635: Add TCP_QUICKACK socket option
Reviewed-by: chegar, rriggs, clanger

! make/lib/Lib-jdk.net.gmk
+ make/mapfiles/libextnet/mapfile-linux
+ make/mapfiles/libextnet/mapfile-solaris
- make/mapfiles/libextnet/mapfile-vers
! src/java.base/unix/classes/java/net/PlainDatagramSocketImpl.java
+ src/jdk.net/linux/classes/jdk/net/LinuxSocketOptions.java
+ src/jdk.net/linux/native/libextnet/LinuxSocketOptions.c
! src/jdk.net/share/classes/jdk/net/ExtendedSocketOptions.java
! src/jdk.net/share/classes/jdk/net/Sockets.java
+ test/jdk/jdk/net/Sockets/QuickAckTest.java