fix some visibility flags in builtins

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/FileFunctions.java

@@ -67,9 +67,7 @@ import com.oracle.truffle.r.runtime.RError.Message;
 import com.oracle.truffle.r.runtime.RInternalError;
 import com.oracle.truffle.r.runtime.RRuntime;
 import com.oracle.truffle.r.runtime.Utils;
-import com.oracle.truffle.r.runtime.builtins.RBehavior;
 import com.oracle.truffle.r.runtime.builtins.RBuiltin;
-import com.oracle.truffle.r.runtime.builtins.RBuiltinKind;
 import com.oracle.truffle.r.runtime.context.ConsoleHandler;
 import com.oracle.truffle.r.runtime.context.RContext;
 import com.oracle.truffle.r.runtime.data.RDataFactory;
@@ -1018,7 +1016,7 @@ public class FileFunctions {
         }
     }
 
-    @RBuiltin(name = "file.show", kind = RBuiltinKind.INTERNAL, parameterNames = {"files", "header", "title", "delete.file", "pager"}, behavior = RBehavior.IO)
+    @RBuiltin(name = "file.show", kind = INTERNAL, parameterNames = {"files", "header", "title", "delete.file", "pager"}, visibility = OFF, behavior = IO)
     public abstract static class FileShow extends RBuiltinNode {
 
         @Override

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/SetTimeLimit.java

@@ -23,6 +23,7 @@
 package com.oracle.truffle.r.nodes.builtin.base;
 
 import static com.oracle.truffle.r.nodes.builtin.CastBuilder.Predef.*;
+import static com.oracle.truffle.r.runtime.RVisibility.OFF;
 import static com.oracle.truffle.r.runtime.builtins.RBehavior.COMPLEX;
 import static com.oracle.truffle.r.runtime.builtins.RBuiltinKind.INTERNAL;
 
@@ -32,7 +33,7 @@ import com.oracle.truffle.r.nodes.builtin.RBuiltinNode;
 import com.oracle.truffle.r.runtime.builtins.RBuiltin;
 import com.oracle.truffle.r.runtime.data.RNull;
 
-@RBuiltin(name = "setTimeLimit", kind = INTERNAL, parameterNames = {"cpu", "elapsed", "transient"}, behavior = COMPLEX)
+@RBuiltin(name = "setTimeLimit", kind = INTERNAL, parameterNames = {"cpu", "elapsed", "transient"}, visibility = OFF, behavior = COMPLEX)
 public abstract class SetTimeLimit extends RBuiltinNode {
 
     @Override

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/SysFunctions.java

@@ -382,7 +382,7 @@ public class SysFunctions {
         }
     }
 
-    @RBuiltin(name = "setFileTime", kind = INTERNAL, parameterNames = {"path", "time"}, behavior = IO)
+    @RBuiltin(name = "setFileTime", kind = INTERNAL, parameterNames = {"path", "time"}, visibility = OFF, behavior = IO)
     public abstract static class SysSetFileTime extends RBuiltinNode {
         @Override
         protected void createCasts(CastBuilder casts) {