+++ This bug was initially created as a clone of Bug #1318910 +++

Description of problem:

Platform BZ for https://issues.jboss.org/browse/DROOLS-986


If you run Drools with  System.setProperty("drools.ruleEngine", "reteoo"), you will get an NPE.

====
java.lang.NullPointerException
	at org.drools.core.RuleBaseConfiguration.configureReteComponentFactory(RuleBaseConfiguration.java:953)
	at org.drools.core.RuleBaseConfiguration.setPhreakEnabled(RuleBaseConfiguration.java:791)
	at org.drools.core.RuleBaseConfiguration.init(RuleBaseConfiguration.java:495)
	at org.drools.core.RuleBaseConfiguration.init(RuleBaseConfiguration.java:429)
	at org.drools.core.RuleBaseConfiguration.<init>(RuleBaseConfiguration.java:420)
	at org.drools.core.impl.KnowledgeBaseFactoryServiceImpl.newKnowledgeBaseConfiguration(KnowledgeBaseFactoryServiceImpl.java:38)
	at org.kie.internal.KnowledgeBaseFactory.newKnowledgeBaseConfiguration(KnowledgeBaseFactory.java:125)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.getKnowledgeBaseConfiguration(KieContainerImpl.java:516)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.createKieBase(KieContainerImpl.java:497)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.getKieBase(KieContainerImpl.java:440)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:597)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:568)
	at com.sample.DroolsTest.main(DroolsTest.java:19)
====

Steps to Reproduce:

See Unit test in the commit

https://github.com/droolsjbpm/drools/commit/731f00a66b0fbe6591160af588e0bed44d186c83


Actual results:

NullPointerException is thrown

Expected results:

Execute without an Exception

--- Additional comment from Toshiya Kobayashi on 2016-03-18 02:03:04 EDT ---

I confirmed that it is already fixed in 6.4.x branch and product tag sync-6.4.x-2016.03.08. Setting to MODIFIED.