hg: panama/dev: manual merge with foreign

[maurizio.cimadamore at oracle.com]

Changeset: 2f588132980b
Author:    mcimadamore
Date:      2018-12-19 18:17 +0000
URL:       http://hg.openjdk.java.net/panama/dev/rev/2f588132980b

manual merge with foreign

! src/hotspot/cpu/x86/directUpcallHandler_x86.cpp
! src/hotspot/share/prims/directUpcallHandler.cpp
! src/hotspot/share/prims/sysVx86ABI.cpp
! src/java.base/share/classes/jdk/internal/foreign/abi/LinkToNativeUpcallHandler.java
- src/java.base/share/classes/jdk/internal/foreign/abi/UpcallStub.java
! src/java.base/share/classes/jdk/internal/foreign/abi/x64/sysv/SysVx64ABI.java