Flip the default of allowExternalCalls for message extraction
GITHUB_BREAKING_CHANGES=Users will now need to provide the transitive closure of soy templates to invocations of the SoyMsgExtractor.  As a temporary workaround you can set --allowExternalCalls though this flag will be eventually deleted
@@ -40,9 +40,8 @@ public final class SoyMsgExtractor extends AbstractSoyCompiler {
"Whether to allow external calls. New projects should set this to false, and"
+ " existing projects should remove existing external calls and then set this"
+ " to false. It will save you a lot of headaches. Currently defaults to true"
- + " for backward compatibility."
- )
- private boolean allowExternalCalls = true;
+ + " for backward compatibility.")
+ private boolean allowExternalCalls = false;
@Option(
name = "--outputFile",
