hg: jdk/submit: 8213992: Rename and make DieOnSafepointTimeout the diagnostic option

[shade at redhat.com]

Changeset: 639a3e43f5b7
Author:    shade
Date:      2018-11-20 22:59 +0100
URL:       http://hg.openjdk.java.net/jdk/submit/rev/639a3e43f5b7

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