hg: jdk/submit: 8207849: Allow the addition of more number to the Java version string

[tprintezis at twitter.com]

Changeset: 0619974b4013
Author:    tonyp
Date:      2018-07-20 12:39 -0400
URL:       http://hg.openjdk.java.net/jdk/submit/rev/0619974b4013

8207849: Allow the addition of more number to the Java version string
Reviewed-by: erikj

! make/autoconf/jdk-version.m4
! make/autoconf/spec.gmk.in
! make/autoconf/version-numbers