hg: jdk-updates/jdk11u: 8213992: Rename and make DieOnSafepointTimeout the diagnostic option

[zgu at redhat.com]

Changeset: 01712e8a67c0
Author:    shade
Date:      2018-11-20 22:59 +0100
URL:       http://hg.openjdk.java.net/jdk-updates/jdk11u/rev/01712e8a67c0

8213992: Rename and make DieOnSafepointTimeout the diagnostic option
Reviewed-by: dholmes, dcubed, coleenp, kvn

! src/hotspot/share/runtime/globals.hpp
! src/hotspot/share/runtime/safepoint.cpp