Imported Upstream version 5.18.0.142

Former-commit-id: 7467d4b717762eeaf652d77f1486dd11ffb1ff1f

mcs/class/corlib/corert/Debug.cs

@@ -1,15 +0,0 @@
-namespace System.Diagnostics.Private
-{
-	static partial class Debug
-	{
-		static void ShowDialog (string stackTrace, string message, string detailMessage, string errorSource)
-		{
-			// FIXME should we g_error in this case?
-		}
-
-		static void WriteCore (string message)
-		{
-			// FIXME should we g_debug in this case?
-		}
-	}
-}

mcs/class/corlib/corert/Decimal.DecCalc.cs.REMOVED.git-id

@@ -0,0 +1 @@
+d401155ef021a7c184607b19fe3c53d7ab9bccfe

mcs/class/corlib/corert/Decimal.cs.REMOVED.git-id

@@ -0,0 +1 @@
+185ecfe95a4f99dcc1009272f8eda1cb0952ea95

mcs/class/corlib/corert/RuntimeImports.cs

@@ -0,0 +1,18 @@
+
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Runtime.CompilerServices;
+
+namespace System.Runtime
+{
+    public static partial class RuntimeImports
+    {
+        [MethodImplAttribute(MethodImplOptions.InternalCall)]
+        internal static extern unsafe void _ecvt_s(byte* buffer, int sizeInBytes, double value, int count, int* dec, int* sign);
+    }
+}