[antlr-interest] ooops. missing resource for gunit in 3.1.2

[Terence Parr]

Hi, since it's "early", I'm going to update the 3.1.2 release w/o a  
3.1.2-1 number increment; gunit is missing a jar file in there. damn!   
complaints?  Send 'em quick before I update ;)
Ter