Started 1.4-SNAPSHOT
Fixed invalid scm references.
Merge branch 'master' into devel

Conflicts:
	pom.xml
Updated the parent pom version to 1.6-SNAPSHOT.
Fixed javadoc errors.
Merge branch 'master' into devel

Conflicts:
	pom.xml
Added BZ#1013895 - Add the ability to specify a jDocbook POM version.
Moved docbook classes that were only used during building, to the builder library.
Added an initial implementation for BZ#1030099 - Reduce noise with small topics.
Updated the implementation for BZ#1030099 - Reduce noise with small topics, to fix an issue when working with Articles.
More work on BZ#1030099 - Reduce noise with small topics.
Reworked how Content Spec containers initial text is stored for BZ#1017465
Added more unit tests and fixed a few minor bugs.
Added initial implementation for BZ#1053928 - Add Build/XML Validation support for DocBook 5.
Fix to allow for old "DTD" keyValueNode references.
Added BZ#885564 - RFE: Inline reference to Chapter/Section name.
Fixed BZ#1037269 - Allow default entities to be used in topics.
Fixed an issue where targets weren't being added for Initial Content levels.
Fixed a bug that was causing DocBook 5 validation issues.
Fixed BZ#1064693 - Injections to revision history topic result in validation error.