Enforce new optional parameter rules.

tests/co19/co19-runtime.status

Index: tests/co19/co19-runtime.status
===================================================================
--- tests/co19/co19-runtime.status	(revision 13889)
+++ tests/co19/co19-runtime.status	(working copy)
@@ -20,6 +20,45 @@
 LibTest/core/Date/toLocal_A01_t01: Fail
 LibTest/core/Date/toUtc_A01_t01: Fail
 
+# These tests need to be updated for new optional parameter syntax and semantics, co19 issue 258:
+Language/06_Functions/2_Formal_Parameters/2_Optional_Formals_A01_t01: Fail, OK
+Language/06_Functions/2_Formal_Parameters/2_Optional_Formals_A01_t03: Fail, OK
+Language/07_Classes/1_Instance_Methods_A02_t03: Fail, OK
+Language/07_Classes/1_Instance_Methods_A02_t04: Fail, OK
+Language/07_Classes/1_Instance_Methods_A02_t05: Fail, OK
+Language/07_Classes/1_Instance_Methods_A02_t06: Fail, OK
+Language/07_Classes/4_Abstract_Instance_Members_A04_t04: Fail, OK
+Language/07_Classes/6_Constructors/1_Generative_Constructors_A04_t01: Fail, OK
+Language/07_Classes/6_Constructors/1_Generative_Constructors_A13_t01: Fail, OK
+Language/07_Classes/6_Constructors/1_Generative_Constructors_A18_t01: Fail, OK
+Language/07_Classes/6_Constructors/1_Generative_Constructors_A18_t03: Fail, OK
+Language/10_Expressions/11_Instance_Creation/1_New_A01_t01: Fail, OK
+Language/10_Expressions/11_Instance_Creation/2_Const_A01_t01: Fail, OK
+Language/10_Expressions/11_Instance_Creation/2_Const_A08_t01: Fail, OK
+Language/10_Expressions/11_Instance_Creation/2_Const_A08_t02: Fail, OK
+Language/10_Expressions/14_Function_Invocation/1_Actual_Argument_List_Evaluation_A01_t01: Fail, OK
+Language/10_Expressions/14_Function_Invocation/1_Actual_Argument_List_Evaluation_A02_t01: Fail, OK
+Language/10_Expressions/14_Function_Invocation/2_Binding_Actuals_to_Formals_A01_t02: Fail, OK
+Language/10_Expressions/14_Function_Invocation/2_Binding_Actuals_to_Formals_A03_t01: Fail, OK
+Language/10_Expressions/14_Function_Invocation/2_Binding_Actuals_to_Formals_A08_t01: Fail, OK
+Language/10_Expressions/14_Function_Invocation/2_Binding_Actuals_to_Formals_A08_t02: Fail, OK
+Language/10_Expressions/14_Function_Invocation/2_Binding_Actuals_to_Formals_A08_t03: Fail, OK
+Language/10_Expressions/14_Function_Invocation/2_Binding_Actuals_to_Formals_A08_t04: Fail, OK
+Language/10_Expressions/15_Method_Invocation/1_Ordinary_Invocation_A01_t01: Fail, OK
+Language/10_Expressions/15_Method_Invocation/1_Ordinary_Invocation_A04_t01: Fail, OK
+Language/10_Expressions/15_Method_Invocation/3_Static_Invocation_A01_t01: Fail, OK
+Language/10_Expressions/15_Method_Invocation/4_Super_Invocation_A01_t01: Fail, OK
+Language/14_Types/5_Function_Types_A01_t21: Fail, OK
+LibTest/core/Expect/approxEquals_A02_t01: Fail, OK
+LibTest/core/Expect/approxEquals_A03_t01: Fail, OK
+LibTest/core/Expect/approxEquals_A04_t01: Fail, OK
+LibTest/core/Expect/listEquals_A03_t01: Fail, OK
+LibTest/core/Expect/notEquals_A02_t01: Fail, OK
+LibTest/core/Expect/stringEquals_A02_t01: Fail, OK
+LibTest/core/Expect/throws_A01_t01: Fail, OK
+LibTest/core/Expect/throws_A01_t03: Fail, OK
+LibTest/core/List/List_A01_t01: Fail, OK
+
 LibTest/core/OutOfMemoryException/OutOfMemoryException_A01_t01: Fail # co19 issue 263
 LibTest/core/OutOfMemoryException/toString_A01_t01: Fail # co19 issue 263