Adding antlr as a build-only dependency

git-svn-id: https://svn.apache.org/repos/asf/db/ddlutils/trunk@893923 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/build-only/antlr.jar b/lib/build-only/antlr.jar
new file mode 100644
index 0000000..3702b64
--- /dev/null
+++ b/lib/build-only/antlr.jar
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