Enable all implementation-defined-behavior examples (dotnet#725)

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Author: RexJaeschke

standard/classes.md

@@ -1783,8 +1783,8 @@ The static field variable initializers of a class correspond to a sequence of as
 
 > *Example*: The example
 >
-> <!-- Maintenance Note: The behavior of this example is implementation-defined. As such, the metadata does *not* compare test output with any ```console block. When last tested, the output was the second of the two possibilities. -->
-> <!-- ImplementationDefined$Example: {template:"standalone-console", name:"StaticFieldInitialization1"} -->
+> <!-- Example: {template:"standalone-console", name:"StaticFieldInitialization1", ignoreOutput:true} -->
+> <!-- Maintenance Note: The behavior of this example is implementation-defined. As such, the metadata does not compare test output with any ```console block. -->
 > ```csharp
 > class Test
 > {

standard/unsafe-code.md

@@ -305,7 +305,7 @@ When a pointer type is converted to a pointer to `byte`, the result points to th
 
 > *Example*: The following method displays each of the eight bytes in a `double` as a hexadecimal value:
 >
-> <!-- ImplementationDefined$Example: {template:"standalone-console", name:"PointerConversions2", expectedOutput:["BA","FF","51","A2","90","6C","24","45"], expectedErrors:["x","x"]} -->
+> <!-- Example: {template:"standalone-console", name:"PointerConversions2", ignoreOutput:true} -->
 > ```csharp
 > class Test
 > {
@@ -317,15 +317,15 @@ When a pointer type is converted to a pointer to `byte`, the result points to th
 >             byte* pb = (byte*)&d;
 >             for (int i = 0; i < sizeof(double); ++i)
 >             {
->                 Console.Write($"{*pb++:X2} ");
+>                 Console.Write($" {*pb++:X2}");
 >             }
 >             Console.WriteLine();
 >         }
 >     }
 > }
 > ```
 >
-> Of course, the output produced depends on endianness.
+> Of course, the output produced depends on endianness. One possibility is `" BA FF 51 A2 90 6C 24 45"`.
 >
 > *end example*