Netty Direct Buffer warning fix

When deploying Wildfly 8.x, you'll see this in the server.log:
```
INFO [io.netty.util.internal.PlatformDependent] Your platform does not provide complete low-level API for accessing direct buffers reliably. Unless explicitly requested, heap buffer will always be preferred to av
oid potential system unstability.
```
Following this into netty, here:
https://github.com/netty/netty/blob/master/common/src/main/java/io/netty/util/internal/PlatformDependent.java#L581
Down to here:
https://github.com/netty/netty/blob/netty-4.0.15.Final/common/src/main/java/io/netty/util/internal/PlatformDependent0.java#L82

We need access to sun.misc to see if direct buffers are available.
WFLY-3829 linux
Update module.xml

Added javassist after inspecting io.netty log messages as "FINE" level after Wildfly startup and seeing additional information from netty requesting javassist for performance.
Update module.xml

Add optional flag to javassist as this is part of Wildfly-core
[WFLY-3846] JMS resources allows duplicate JNDI entries

* use noDuplicateElements ListValidator for attribute definitions
  representing JNDI Entries.

JIRA: https://issues.jboss.org/browse/WFLY-3846
WFLY-3443 JCA tracking should default to false for datasources
Merge pull request #6699 from jmesnil/WFLY-3846_duplicate_JNDI_entries

[WFLY-3846] JMS resources allows duplicate JNDI entries
[WFLY-3638] : Reactivting the test now that WFLY-543 has been merged.
[WFLY-3689] enhance DeploymentPackagedRARelativePathTestCase with a test using a deployment descriptor

add copyright
WFLY-3864 Upgrade Weld to 2.2.5.Final
[WFLY-3866] Fail the :remove-jndi operation if the entry is unknown

JIRA: https://issues.jboss.org/browse/WFLY-3866
Merge pull request #6727 from jmesnil/WFLY-3866_remove-jndi_unknown_entry

[WFLY-3866] Fail the :remove-jndi operation if the entry is unknown
WFLY-3870: Upgrade HAL to 2.4.0.Final
[WFLY-3827] - Update Subsystem for PicketLink Console.
WFLY-3848 Upgrade JGroups to 3.4.6.Final
Merge pull request #6721 from ehsavoie/WFLY-3638

[WFLY-3638] : Reactivating the test now that WFLY-543 has been merged.
Merge pull request #6722 from jmartisk/master-jbqa-10880

[WFLY-3689] enhance DeploymentPackagedRARelativePathTestCase with a test...
Merge pull request #6729 from hpehl/WFLY-3870

WFLY-3870: Upgrade HAL to 2.4.0.Final
WFLY-3844 invlidate the principal cache on logout
WFLY-3221 Enable flushOnSessionInvalidation support