Provide an initial patch for the integration of the JMX Reporting of DBCP.
I hope that the format of the patch is now alright
The patch adds a new target "download-commons-dbcp-jmx" to the build.xml to download the corresponding jars via ivy (ivy.xml is adopted to this as well).
This is just an initial draft and it is working, but I guess there should be a slightly different implementation. The current implementation does not rely on the commons-dbcp-jmx stuff, but only on a couple of dependencies of this project.
To gain more information about the connection, the JMX MBean should be able to gather also information about the connection because right now the information in the JConsole is pretty useless without knowing the connection url.