Remove usage of Enum.HasFlag

Commit migrated from https://github.com/dotnet/corefx/commit/6ee65e3dd65d8061618f07ad5afbd981ac052779

src/libraries/Microsoft.CSharp/src/Microsoft/CSharp/RuntimeBinder/BinderHelper.cs

@@ -175,12 +175,12 @@ internal static bool IsWindowsRuntimeObject(DynamicMetaObject obj)
                 Type curType = obj.RuntimeType;
                 while (curType != null)
                 {
-                    if (curType.GetTypeInfo().Attributes.HasFlag(System.Reflection.TypeAttributes.WindowsRuntime))
+                    if ((curType.GetTypeInfo().Attributes & TypeAttributes.WindowsRuntime) == TypeAttributes.WindowsRuntime)
                     {
                         // Found a WinRT COM object
                         return true;
                     }
-                    if (curType.GetTypeInfo().Attributes.HasFlag(System.Reflection.TypeAttributes.Import))
+                    if ((curType.GetTypeInfo().Attributes & TypeAttributes.Import) == TypeAttributes.Import)
                     {
                         // Found a class that is actually imported from COM but not WinRT
                         // this is definitely a non-WinRT COM object

src/libraries/Microsoft.CSharp/src/Microsoft/CSharp/RuntimeBinder/Semantics/Types/Type.cs

@@ -44,7 +44,7 @@ internal class CType : ITypeOrNamespace
 
         public bool IsWindowsRuntimeType()
         {
-            return this.AssociatedSystemType.GetTypeInfo().Attributes.HasFlag(System.Reflection.TypeAttributes.WindowsRuntime);
+            return (this.AssociatedSystemType.GetTypeInfo().Attributes & TypeAttributes.WindowsRuntime) == TypeAttributes.WindowsRuntime;
         }
 
         public bool IsCollectionType()

src/libraries/Microsoft.VisualBasic/src/Microsoft/VisualBasic/CompilerServices/Symbols.vb

@@ -805,10 +805,10 @@ Namespace Microsoft.VisualBasic.CompilerServices
                 Get
                     Dim curType As Type = _type
                     While curType IsNot Nothing
-                        If curType.GetTypeInfo.Attributes.HasFlag(System.Reflection.TypeAttributes.WindowsRuntime) Then
+                        If (curType.GetTypeInfo.Attributes And TypeAttributes.WindowsRuntime) = TypeAttributes.WindowsRuntime Then
                             ' Found a WinRT COM object
                             Return True
-                        ElseIf curType.GetTypeInfo.Attributes.HasFlag(System.Reflection.TypeAttributes.Import) Then
+                        ElseIf (curType.GetTypeInfo.Attributes And TypeAttributes.Import) = TypeAttributes.Import Then
                             ' Found a class that is actually imported from COM but not WinRT
                             ' this is definitely a non-WinRT COM object
                             Return False

src/libraries/System.Reflection/tests/ParameterInfoTests.cs

@@ -148,7 +148,7 @@ public void Attributes(Type type, string name, int index, ParameterAttributes[]
             ParameterInfo parameterInfo = GetParameterInfo(type, name, index);
             foreach (ParameterAttributes attribute in expected)
             {
-                Assert.True(parameterInfo.Attributes.HasFlag(attribute));
+                Assert.True((parameterInfo.Attributes & attribute) == attribute);
             }
         }
 

src/libraries/System.Security.Cryptography.X509Certificates/src/Internal/Cryptography/Pal.Unix/StorePal.cs

@@ -135,7 +135,7 @@ public static IStorePal FromSystemStore(string storeName, StoreLocation storeLoc
                 return new DirectoryBasedStoreProvider(storeName, openFlags);
             }
 
-            if (openFlags.HasFlag(OpenFlags.ReadWrite))
+            if ((openFlags & OpenFlags.ReadWrite) == OpenFlags.ReadWrite)
             {
                 throw new PlatformNotSupportedException(SR.Cryptography_Unix_X509_MachineStoresReadOnly);
             }