The list of checked jars in build/libs is wrong....

diff --git a/build.gradle b/build.gradle
--- a/build.gradle
+++ b/build.gradle
@@ -1753,7 +1753,7 @@
         libsDir.mkdirs();
 
         def allLibsPresent = true
- def libNames = ["antlr-3.1.3.jar", "stringtemplate-3.2.jar", "antlr-runtime-3.1.3.jar"]
+ def libNames = [ "antlr-complete-3.5.2.jar" ]
         libNames.each { name ->
             File f = new File(libsDir, name)
             if (!f.exists()) allLibsPresent = false