Moved methods dealing with constructor arguments.

Since BeanHelper is no longer a static utility class, the
findMatchingConstructor() method does not really belong here. It was moved to
DefaultBeanFactory and made protected. Here it can be used by custom
BeanFactory implementations extending this class.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1520796 13f79535-47bb-0310-9956-ffa450edef68
Removed throws declarations for runtime exceptions.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1520797 13f79535-47bb-0310-9956-ffa450edef68