Bug#547179: Should depend on Antlr v3, not v2

[Florian Weimer]

* Tommi Vainikainen:

> Florian Weimer <fw at deneb.enyo.de> writes:
>> Stringtemplate parses the templates using an antlr-generated parser
>> (and version 2 at that), so the dependency is really there.
>
> I stand corrected. However, could the Antlr v2 packaging be modified
> then so that user installing antlr3 would not get confused? Does
> stringtemplate really need antlr v2 executables, or just simple library
> part of antlr v2?

I think the library should be sufficient.