[WFLY-3534] - Updating code to reflect changes from transaction subsystem.
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
Merge pull request #6685 from pedroigor/WFLY-3534

[WFLY-3534] - Updating code to reflect changes from transaction subsystem.
WFLY-2515 - JBAS014249 if a fire and forget asynchronous ejb call is made
[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-3847] Implement AS7BindingRegistry#lookup

to respect the SPI contract of the HornetQ interface

JIRA: https://issues.jboss.org/browse/WFLY-3847
Update AbstractSecurityMetaDataAccessorEJB.java

Allow security domain to be null to disable security interceptors, and avoid NPE during deploy if missing
[WFLY-3348] Restore assertion now that we know it was a valid failure
Update to Alpha6
Fix assembly
Fix another assembly
Update to 1.0.0.Alpha7, and provide distro version output
Manage undertow version from core
Merge pull request #6707 from stuartwdouglas/master

Manage undertow version from core
Update to Alpha8 to fix the IP6 tests
WFLY-3855 quickfix for failed test
fix HTTPSConnectionWithCLITestCase when runing on ipv6