Imported Upstream version 5.2.0.175

Former-commit-id: bb0468d0f257ff100aa895eb5fe583fb5dfbf900

mcs/class/referencesource/System/compmod/system/collections/generic/stack.cs

@@ -227,6 +227,22 @@ namespace System.Collections.Generic {
             _array[_size] = default(T);     // Free memory quicker.
             return item;
         }
+
+#if MONO
+        public bool TryPop(out T result)
+        {
+            if (_size == 0)
+            {
+                result = default(T);
+                return false;
+            }
+
+            _version++;
+            result = _array[--_size];
+            _array[_size] = default(T);     // Free memory quicker.
+            return true;
+        }
+#endif
     
         // Pushes an item to the top of the stack.
         // 

mcs/class/referencesource/System/compmod/system/componentmodel/EditorAttribute.cs

@@ -10,8 +10,7 @@ namespace System.ComponentModel {
     
     using System.Diagnostics;
     using System.Globalization;
-    using System.Security.Permissions;
-                                
+
     /// <devdoc>
     ///    <para>Specifies the editor to use to change a property. This class cannot be inherited.</para>
     /// </devdoc>
@@ -36,7 +35,7 @@ namespace System.ComponentModel {
         ///    name of the editor.</para>
         /// </devdoc>
         public EditorAttribute(string typeName, string baseTypeName) {
-            string temp = typeName.ToUpper(CultureInfo.InvariantCulture);
+            string temp = typeName.ToUpperInvariant ();
             Debug.Assert(temp.IndexOf(".DLL") == -1, "Came across: " + typeName + " . Please remove the .dll extension");
             this.typeName = typeName;
             this.baseTypeName = baseTypeName;
@@ -46,7 +45,7 @@ namespace System.ComponentModel {
         /// <para>Initializes a new instance of the <see cref='System.ComponentModel.EditorAttribute'/> class.</para>
         /// </devdoc>
         public EditorAttribute(string typeName, Type baseType) {
-            string temp = typeName.ToUpper(CultureInfo.InvariantCulture);
+            string temp = typeName.ToUpperInvariant ();
             Debug.Assert(temp.IndexOf(".DLL") == -1, "Came across: " + typeName + " . Please remove the .dll extension");
             this.typeName = typeName;
             this.baseTypeName = baseType.AssemblyQualifiedName;

mcs/class/referencesource/System/compmod/system/componentmodel/ExpandableObjectConverter.cs

@@ -9,14 +9,18 @@ namespace System.ComponentModel {
     using System.Collections;
     using System.ComponentModel.Design;
     using System.Diagnostics;
+#if MONO_FEATURE_CAS
     using System.Security.Permissions;
+#endif
 
     /// <devdoc>
     ///    <para>Provides
     ///       a type converter to convert expandable objects to and from various
     ///       other representations.</para>
     /// </devdoc>
+#if MONO_FEATURE_CAS
     [HostProtection(SharedState = true)]
+#endif
     public class ExpandableObjectConverter : TypeConverter {
     
         /// <devdoc>

mcs/class/referencesource/System/compmod/system/componentmodel/InvalidEnumArgumentException.cs

@@ -10,12 +10,16 @@ namespace System.ComponentModel {
     using System.Diagnostics;
     using System.Globalization;
     using System.Runtime.Serialization;
+#if MONO_FEATURE_CAS
     using System.Security.Permissions;
+#endif
     
     /// <devdoc>
     ///    <para>The exception that is thrown when using invalid arguments that are enumerators.</para>
     /// </devdoc>
+#if MONO_FEATURE_CAS
     [HostProtection(SharedState = true)]
+#endif
     [Serializable]
     public class InvalidEnumArgumentException : ArgumentException {
 

mcs/class/referencesource/System/compmod/system/componentmodel/design/serialization/InstanceDescriptor.cs

@@ -10,15 +10,19 @@ namespace System.ComponentModel.Design.Serialization {
     using System.Collections;
     using System.Diagnostics;
     using System.Reflection;
+#if MONO_FEATURE_CAS 
     using System.Security.Permissions;
+#endif
 
     /// <devdoc>
     ///     EventArgs for the ResolveNameEventHandler.  This event is used
     ///     by the serialization process to match a name to an object
     ///     instance.
     /// </devdoc>
-    [HostProtection(SharedState = true)]
+#if MONO_FEATURE_CAS 
+    [HostProtection(SharedState = true)]		
     [System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.LinkDemand, Name = "FullTrust")]
+#endif
     public sealed class InstanceDescriptor {
         private MemberInfo  member;
         private ICollection arguments;