hg: panama/dev: 8225169: fix LongDoubleTest on AArch64

[ningsheng.jian at arm.com]

Changeset: cac7cf9a5bdb
Author:    ngasson
Date:      2019-06-14 10:36 +0800
URL:       http://hg.openjdk.java.net/panama/dev/rev/cac7cf9a5bdb

8225169: fix LongDoubleTest on AArch64
Reviewed-by: mcimadamore

! src/java.base/share/classes/jdk/internal/foreign/abi/DirectSignatureShuffler.java
! src/java.base/share/classes/jdk/internal/foreign/memory/LayoutTypeImpl.java
! test/jdk/java/foreign/LongDoubleTest.java