Don't consider TruffleException as uncaught Java exceptions

* For example, NFIUnsatisfiedLinkError is a TruffleException and is
  rescued by FFI::Library#ffi_lib.

Author: eregon

src/main/java/org/truffleruby/language/methods/ExceptionTranslatingNode.java

@@ -10,6 +10,7 @@
 package org.truffleruby.language.methods;
 
 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
+import com.oracle.truffle.api.TruffleException;
 import com.oracle.truffle.api.dsl.UnsupportedSpecializationException;
 import com.oracle.truffle.api.frame.VirtualFrame;
 import com.oracle.truffle.api.nodes.ControlFlowException;
@@ -238,8 +239,10 @@ private DynamicObject translateThrowable(Throwable throwable) {
             throw (AssertionError) throwable;
         }
 
+        final boolean truffleException = throwable instanceof TruffleException;
+
         if (getContext().getOptions().EXCEPTIONS_PRINT_JAVA
-                || getContext().getOptions().EXCEPTIONS_PRINT_UNCAUGHT_JAVA) {
+                || (!truffleException && getContext().getOptions().EXCEPTIONS_PRINT_UNCAUGHT_JAVA)) {
             throwable.printStackTrace();
 
             if (getContext().getOptions().EXCEPTIONS_PRINT_RUBY_FOR_JAVA) {