Respect System.Runtime.CompilerServices.SkipLocalsInitAttribute

[adrianoc]

• SkipLocalsInit

class Foo
{
    [System.Runtime.CompilerServices.SkipLocalsInit]
    static void Test()
    {
       var x = new System.DateTime();
       Console.WriteLine(x);
    }
}

should not emit the following line:

md_Test_1.Body.InitLocals = true;