hg: jdk/submit12: 8214583: AccessController.getContext may return wrong value after JDK-8212605

[dean.long at oracle.com]

Changeset: 7496df94b3b7
Author:    dlong
Date:      2018-12-18 16:36 -0800
URL:       http://hg.openjdk.java.net/jdk/submit12/rev/7496df94b3b7

8214583: AccessController.getContext may return wrong value after JDK-8212605
Reviewed-by: mchung, redestad

! src/hotspot/share/include/jvm.h
! src/hotspot/share/prims/jvm.cpp
! src/java.base/share/classes/java/security/AccessController.java
! src/java.base/share/native/libjava/AccessController.c
+ test/jdk/java/security/AccessController/DoPriv.java
+ test/jdk/javax/security/auth/Subject/DoAs.java