Removed deprecated HierarchicalXMLConfiguration class.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1613711 13f79535-47bb-0310-9956-ffa450edef68
Fixed raw types warnings.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1613712 13f79535-47bb-0310-9956-ffa450edef68
Started reworking utility chapter from the user's guide.

Adapted subsection "Converting a flat configuration into a hierarchical one".

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1613713 13f79535-47bb-0310-9956-ffa450edef68
Reworked example for section "Interpolation of all variables".

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1613714 13f79535-47bb-0310-9956-ffa450edef68
Some adaptations of section "Handling of runtime exceptions".

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1613715 13f79535-47bb-0310-9956-ffa450edef68
Added a new subsection to the utilities chapter of the user guide.

Described the usage of BuilderConfigurationWrapperFactory.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1613716 13f79535-47bb-0310-9956-ffa450edef68
Fixed an incorrect example in the user guide.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1613717 13f79535-47bb-0310-9956-ffa450edef68
[CONFIGURATION-578] Updated changes.xml.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1613718 13f79535-47bb-0310-9956-ffa450edef68