[antlr-interest] Specify directory for importVocab

[John Reid]

Terence Parr wrote:
> 
> try java org.antlr.Tool.  Should give list of args.
> 
> Use -lib i think.
> 
This class doesn't exist in my 2.7.5 jar. When I try java antlr.Tool I 
don't see the -lib argument.

Can I upgrade to a newer antlr with the -lib option functionality 
without changing my grammars?

Thanks,
John.