Fix Kernel#respond_to? for protected methods and untag tests.

PullRequest: truffleruby/630

Author: nirvdrum

CHANGELOG.md

@@ -25,6 +25,8 @@ Bug fixes:
 * `Array#each` now behaves like MRI when the array is modified (#1580).
 * Clarified that `$SAFE` can never be set to a non-zero value.
 * Fix compatibility with RubyGems 3 (#1558).
+* `Kernel#respond_to?` now returns false if a method is protected and
+  the `include_all` argument is false (#1568).
 
 Changes:
 

spec/tags/core/kernel/respond_to_missing_tags.txt

@@ -24,7 +24,7 @@ public static DoesRespondDispatchHeadNode createPublic() {
     }
 
     private DoesRespondDispatchHeadNode(boolean ignoreVisibility) {
-        super(ignoreVisibility, false, MissingBehavior.RETURN_MISSING, DispatchAction.RESPOND_TO_METHOD);
+        super(ignoreVisibility, !ignoreVisibility, MissingBehavior.RETURN_MISSING, DispatchAction.RESPOND_TO_METHOD);
     }
 
     /**