hg: jdk/sandbox: http-client-branch: fix HTTP/1.1 retry to avoid duplication of header values

[daniel.fuchs at oracle.com]

Changeset: eb72d194235c
Author:    dfuchs
Date:      2018-03-23 18:01 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/eb72d194235c

http-client-branch: fix HTTP/1.1 retry to avoid duplication of header values

! src/java.net.http/share/classes/jdk/internal/net/http/MultiExchange.java
! src/java.net.http/share/classes/jdk/internal/net/http/ProxyAuthenticationRequired.java
! src/java.net.http/share/classes/jdk/internal/net/http/SocketTube.java
+ test/jdk/java/net/httpclient/RetryWithCookie.java