Rename Primitive.object_clone to Primitive.kernel_clone

Author: eregon

src/main/java/org/truffleruby/core/kernel/KernelNodes.java

@@ -547,7 +547,7 @@ protected RubyDynamicObject copy(RubyIntOrLongRange range,
         }
     }
 
-    @Primitive(name = "object_clone") // "clone"
+    @Primitive(name = "kernel_clone") // "clone"
     public abstract static class CloneNode extends PrimitiveArrayArgumentsNode {
 
         @Child IsCopyableObjectNode isCopyableObjectNode = IsCopyableObjectNodeGen.create();

src/main/ruby/truffleruby/core/kernel.rb

@@ -778,7 +778,7 @@ def clone(freeze: nil)
       raise ArgumentError, "unexpected value for freeze: #{Primitive.class(freeze)}"
     end
 
-    Primitive.object_clone self, freeze
+    Primitive.kernel_clone self, freeze
   end
 
   def initialize_clone(from, freeze: nil)