updates to the Jolokia collector to add regex mbean matching, and regex rewrites

modified: jolokia.conf
```mbeansre``` works like ```mbeans``` but matches on regular expressions.  
In the configuration, for multiple entries for ```mbeansre``` needs to be 
separated by space-pipe-space not just pipe characters as in mbeans.

```rewrite``` provides a way of renaming the data keys before it sent out to
the handler.  Pairs of from-to regular expressions are separated by ->, and 
multiple sets of pairs are separated by space-pipe-space