CMR getters should be thread safe and can't require JVM halt for applying configuration changes in JTAEnvironementBean

The CMR getters should use the copy constructors as it's usual in other places in JTAEnvironemtBean. The copy constructor helps the thread safety.

• https://github.com/jbosstm/narayana/blob/5.10.4.Final/ArjunaJTA/jta/classes/com/arjuna/ats/jta/common/JTAEnvironmentBean.java#L1201
• https://github.com/jbosstm/narayana/blob/5.10.4.Final/ArjunaJTA/jta/classes/com/arjuna/ats/jta/common/JTAEnvironmentBean.java#L1147
• https://github.com/jbosstm/narayana/blob/5.10.4.Final/ArjunaJTA/jta/classes/com/arjuna/ats/jta/common/JTAEnvironmentBean.java#L1056