hg: panama/dev: 8226519: Add layout helper methods to obtain size and alignment in bytes

[maurizio.cimadamore at oracle.com]

Changeset: c6184bb76635
Author:    mcimadamore
Date:      2019-06-25 15:10 +0100
URL:       http://hg.openjdk.java.net/panama/dev/rev/c6184bb76635

8226519: Add layout helper methods to obtain size and alignment in bytes

! src/java.base/share/classes/java/foreign/AbstractLayout.java
! src/java.base/share/classes/java/foreign/GroupLayout.java
! src/java.base/share/classes/java/foreign/Layout.java
! src/java.base/share/classes/java/foreign/MemorySegment.java
! src/java.base/share/classes/java/foreign/SequenceLayout.java
! src/java.base/share/classes/java/lang/invoke/MemoryAccessVarHandles.java
! src/java.base/share/classes/java/lang/invoke/VarHandles.java
! src/java.base/share/classes/jdk/internal/foreign/LayoutPathImpl.java
! src/java.base/share/classes/jdk/internal/foreign/NativeScope.java
+ src/java.base/share/classes/jdk/internal/foreign/Utils.java
! test/jdk/java/foreign/TestByteBuffer.java
! test/jdk/java/foreign/TestMemoryAccess.java
! test/jdk/java/foreign/TestMemoryAlignment.java
! test/jdk/java/foreign/TestNative.java
! test/jdk/java/foreign/TestSegments.java