need to get DISCLAIMER.txt included in jar files

[Kevan Miller]

DISCLAIMER.txt files have been added to branches/v2_2 and trunk/ 
openejb2. However, the disclaimers aren't being included in the jar  
file. Looks like the copy-legal-files goal should handle for us, but  
it's not (at least not for me).

Could someone take a look at this?
--kevan