hg: jdk10/jdk10/jdk: 8184603: Create ObjectStreamField signature lazily when possible

[claes.redestad at oracle.com]

Changeset: 962144cb4baa
Author:    redestad
Date:      2017-07-18 12:40 +0200
URL:       http://hg.openjdk.java.net/jdk10/jdk10/jdk/rev/962144cb4baa

8184603: Create ObjectStreamField signature lazily when possible
Reviewed-by: rriggs, chegar, alanb, shade

! src/java.base/share/classes/java/io/ObjectStreamField.java