[Integrated] [foreign-memaccess] RFR: JDK-8242046: Add a predicate to determine if MemoryLayout is a padding layout

[Maurizio Cimadamore]

Changeset: aa24d19a
Author:    Maurizio Cimadamore <mcimadamore at openjdk.org>
Date:      2020-04-02 14:54:16 +0000
URL:       https://git.openjdk.java.net/panama-foreign/commit/aa24d19a

JDK-8242046: Add a predicate to determine if MemoryLayout is a padding layout

Reviewed-by: jvernee

! src/jdk.incubator.foreign/share/classes/jdk/incubator/foreign/AbstractLayout.java
! src/jdk.incubator.foreign/share/classes/jdk/incubator/foreign/MemoryLayout.java
! test/jdk/java/foreign/TestLayouts.java