hg: panama/dev: 8223768: Rethink relationship between Sequence vs. Group layouts

[maurizio.cimadamore at oracle.com]

Changeset: a132c54db720
Author:    mcimadamore
Date:      2019-05-13 17:33 +0100
URL:       http://hg.openjdk.java.net/panama/dev/rev/a132c54db720

8223768: Rethink relationship between Sequence vs. Group layouts
Split Group and Sequence; add Compound supertype.

! src/java.base/share/classes/java/foreign/Address.java
+ src/java.base/share/classes/java/foreign/Compound.java
! src/java.base/share/classes/java/foreign/Group.java
! src/java.base/share/classes/java/foreign/Sequence.java
! src/java.base/share/classes/java/foreign/Value.java
! src/java.base/share/classes/java/lang/invoke/VarHandles.java
! src/java.base/share/classes/jdk/internal/foreign/LayoutPathsImpl.java
! test/jdk/java/foreign/TestMemoryAccess.java