Removed all specific BeanInfo classes for builder parameters.

With BeanUtils 1.9 and appropriately configured BeanIntrospection, these
classes should not be needed any more.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1553022 13f79535-47bb-0310-9956-ffa450edef68
BeanHelper now manages a BeanUtilsBean instance initialized in a special way.

This instance uses an additional BeanIntrospector with support for fluent
interfaces as used by the concrete builder parameters implementations. The
methods accessing bean properties are now delegating to this BeanUtilsBean
instance.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1553023 13f79535-47bb-0310-9956-ffa450edef68