hg: jdk/jdk: 8198303: jdk11+1 was build with incorrect GA date as 2018-03-20

[abhi.saha at oracle.com]

Changeset: b2bba53b079d
Author:    diazhou
Date:      2018-02-20 23:15 +0000
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/b2bba53b079d

8198303: jdk11+1 was build with incorrect GA date as 2018-03-20
Reviewed-by: erikj, ihse
Contributed-by: diancui.zhou at oracle.com

! make/autoconf/version-numbers