moved PyUnicode_XXX nodes from PythonCextBuiltins to PythonCextUnicodeBuiltins

Author: tomasstupka

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/Python3Core.java

@@ -118,6 +118,7 @@
 import com.oracle.graal.python.builtins.modules.cext.PythonCextNumberBuiltins;
 import com.oracle.graal.python.builtins.modules.cext.PythonCextSequenceBuiltins;
 import com.oracle.graal.python.builtins.modules.cext.PythonCextSetBuiltins;
+import com.oracle.graal.python.builtins.modules.cext.PythonCextUnicodeBuiltins;
 import com.oracle.graal.python.builtins.modules.csv.CSVDialectBuiltins;
 import com.oracle.graal.python.builtins.modules.csv.CSVModuleBuiltins;
 import com.oracle.graal.python.builtins.modules.csv.CSVReaderBuiltins;
@@ -485,6 +486,7 @@ private static PythonBuiltins[] initializeBuiltins(boolean nativeAccessAllowed)
                         new PythonCextNumberBuiltins(),
                         new PythonCextSetBuiltins(),
                         new PythonCextSequenceBuiltins(),
+                        new PythonCextUnicodeBuiltins(),
                         new WeakRefModuleBuiltins(),
                         new ReferenceTypeBuiltins(),
                         new WarningsModuleBuiltins(),