update on build error

[Jon Brisbin]

The error with commons codec is caused by the inconsistency of the  
commons.codec.version property. In module poms it's  
"commons.codec.version", but in the parent pom, it's "commons- 
codec.version" (note the dash). I added "commons.codec.version" to the  
root pom because I didn't know if "commons-codec.version was used  
anywhere. Other commons-* things are referenced using a dash, so I  
suspect the intent was to use a dash, but the other poms haven't yet  
been normalized to that convention.

Thanks!
Jon Brisibn
http://jbrisbin.com