Report DUPLICATE_CONSTRUCTOR_NAME and other scope fixes

tests/language/language.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # This directory contains tests that are intended to show the
 # current state of the language.
 
 # In order to maintain maximum test coverage for all builds,
 # please use the following procedure to mark a test
 # failed on architectures other than the one you are working on.
@@ skipping 624 matching lines @@
 constructor_call_wrong_argument_count_negative_test: fail
 constructor_negative_test: fail
 constructor_return_with_arrow_negative_test: fail
 constructor_return_with_init_and_arrow_negative_test: fail
 cyclic_type_variable_test/01: fail
 cyclic_type_variable_test/02: fail
 cyclic_type_variable_test/03: fail
 cyclic_type_variable_test/04: fail
 default_factory2_test/01: fail
 default_implementation2_test: fail
-duplicate_constructor_test/01: fail
 dynamic2_test/00: fail
 dynamic_field_test: fail
 export_cyclic_test: fail
 f_bounded_quantification_test/01: fail
 f_bounded_quantification_test/02: fail
 factory2_test: fail
 factory5_test/00: fail
 factory_implementation_test/none: fail
 factory_redirection2_test/01: fail
 factory_redirection_test/07: fail
@@ skipping 12 matching lines @@
 for_in2_test: fail
 function_type_alias5_test/00: fail
 function_type_alias5_test/01: fail
 function_type_alias5_test/02: fail
 getter_no_setter2_test/00: fail
 getter_no_setter2_test/03: fail
 getter_no_setter_test/00: fail
 getter_no_setter_test/01: fail
 getters_setters2_test/01: fail
 getters_setters_type_test/01: fail
-implicit_scope_test: fail
 implicit_this_test/01: fail
 implicit_this_test/04: fail
 implicit_this_test/none: fail
 import_combinators_negative_test: fail
 import_private_test/01: fail
 infinite_switch_label_test: fail
 inst_field_initializer1_negative_test: fail
 instance_call_wrong_argument_count_negative_test: fail
 instance_method2_negative_test: fail
 instance_method_negative_test: fail
@@ skipping 151 matching lines @@
 unary2_test: fail
 unary_test: fail
 unresolved_in_factory_negative_test: fail
 unresolved_top_level_method_negative_test: fail
 unresolved_top_level_var_negative_test: fail
 
 # test issue 10683, It is a compile-time error if e refers to the name v or the name v=.
 block_scope_test: fail
 lazy_static3_test: fail
 
+# test issue 10752, there are 'implicit' scopes for 'if', 'while' and 'do-while'
+implicit_scope_test: fail, OK
 
 [ $arch == arm ]
 *: Skip
 
 [ $arch == simarm ]
 *: Skip
 
 [ $arch == mips ]
 *: Skip
 
 [ $arch == simmips ]
 *: Skip