Replace system properties for hornetq-rest config

MessageServiceManager should leverage XMLUtil.replaceSystemProps() to
allow system property expansion if configResourcePath is set.
Revert delete of deprecated method as it may used by embedded users.
(despite the non-API package name)
Make utility class final. Specially important as embedded users may use this one.
Stop exposing the server configuration.
Merge pull request #771 from Spitemare/master

Replace system properties in hornetq-rest configuration
Merge pull request #773 from jbertram/master

REST doc updates
removing log.txt committed by accident
Fixing SingleLiveMultipleBackupsFailoverTest...
This test was failing after commit 133ce0c9a81d9d52c39325a1924ad6dc75948cd8 (pulsing updates) as that commit was removing / re-adding the node and ignoring certain updates
version name change proposal
Merge pull request #774 from clebertsuconic/master

Test fixes
Practical notes and instructions about getting a release out.
Merge pull request #776 from FranciscoBorges/master

very silly PR, reverts some methods delete and adds minimal "practical release making notes"
Upgrade Netty to 3.6.2.Final because of a fixed bug that can cause the handshake to happen twice
updated release doc
Merge pull request #778 from andytaylor/master

updated release doc
Merge pull request #777 from normanmaurer/master_netty_upgrade

Upgrade Netty to 3.6.2.Final because of a fixed bug that can cause the h...
HornetQ-1112 : Fix JGroups broadcasting/discovery AS7 integration issue
Merge pull request #775 from gaohoward/master

HornetQ-1112 : Fix JGroups broadcasting/discovery AS7 integration issue
Add schema for HornetQ REST configuration

Simple XML schema for HornetQ REST configuration.
Merge pull request #779 from Spitemare/master

Add XML schema for HornetQ REST configuration