Unexpected element 'class-loading' in jboss-web.xml when migrating to JBoss EAP 6/7

Issue

We are migrating an application from JBoss EAP 4. The loader-repository in jboss-web.xml is failing. What is the equivalent be for the following contents of that file:

<jboss-web> 
  <class-loading> 
    <loader-repository>org.hibernate:loader=hibernate3.jar</loader-repository> 
  </class-loading> 
</jboss-web> 

The error received is:

ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service jboss.deployment.unit."example.war".PARSE: org.jboss.msc.service.StartException in service jboss.deployment.unit."example.war".PARSE: JBAS018733: Failed to process phase PARSE of deployment "example.war" 
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:127) [jboss-as-server-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14] 
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1] 
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1] 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.7.0_03] 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.7.0_03] 
    at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_03] 
    Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: JBAS018014: Failed to parse XML descriptor "/C:/Program Files/JBoss/jboss-as/6.2.0/jboss-as/standalone/deployments/example.war/WEB-INF/jboss-web.xml" at [2,4] 
    at org.jboss.as.web.deployment.JBossWebParsingDeploymentProcessor.deploy(JBossWebParsingDeploymentProcessor.java:79) 
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:120) [jboss-as-server-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14] 
    ... 5 more 
    Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[2,4] 
    Message: Unexpected element 'class-loading' encountered