[build] Add Antlr-ng Tool to builds. #4385
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The "-package" option is not the same for antlr-ng. It is now "--package". Antlr-ng for Dart does not work at all.
* Move code to init npm environment after cd'ing to build. * Remove code to get version. It doesn't work because Antlr-ng and Antlr4 tools are very different in version strings. * Remove "-no-listener" because it's useless, but also crashes Antlr-ng.
Trgen requires you to make a choice of what grammar to test when it is ambiguous. This happens when there are preprocessor grammars.
… into update-trash-antlr-ng
… everything else.
…"antlr4 -v" call.
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This PR fixes #4384.
Waiting on a new version of Antlr-ng to stabilize.