hg: jmc/jmc7: JMC-6498: Adding license header (backport of JMC-6497)

[marcus at hirt.se]

Changeset: 6be1a897a17b
Author:    hirt <marcus at hirt.se>
Date:      2019-06-07 15:34 +0200
URL:       http://hg.openjdk.java.net/jmc/jmc7/rev/6be1a897a17b

JMC-6498: Adding license header (backport of JMC-6497)
Reviewed-by: neugens, hdafgard

! core/org.openjdk.jmc.flightrecorder.rules.jdk/src/main/java/org/openjdk/jmc/flightrecorder/rules/jdk/exceptions/FatalErrorRule.java
! core/org.openjdk.jmc.flightrecorder.rules.jdk/src/main/java/org/openjdk/jmc/flightrecorder/rules/jdk/memory/FullGcRule.java