Move SpecializedCollections to Microsoft.CodeAnalysis.Collections namespace (#78466)

Author: tmat

Roslyn.sln

@@ -2144,6 +2144,7 @@ Global
 		src\Analyzers\VisualBasic\CodeFixes\VisualBasicCodeFixes.projitems*{0141285d-8f6c-42c7-baf3-3c0ccd61c716}*SharedItemsImports = 5
 		src\Workspaces\SharedUtilitiesAndExtensions\Workspace\VisualBasic\VisualBasicWorkspaceExtensions.projitems*{0141285d-8f6c-42c7-baf3-3c0ccd61c716}*SharedItemsImports = 5
 		src\Compilers\CSharp\csc\CscCommandLine.projitems*{0161e25c-918a-4dc8-9648-30fdcc8e31e9}*SharedItemsImports = 5
+		src\Workspaces\SharedUtilitiesAndExtensions\Compiler\Extensions\Microsoft.CodeAnalysis.Extensions.projitems*{02bcc112-0a29-43aa-84fa-c71c18a9486c}*SharedItemsImports = 13
 		src\RoslynAnalyzers\Utilities\Compiler\Analyzer.Utilities.projitems*{08735294-3e6b-4420-9916-e7b8c4eb874d}*SharedItemsImports = 13
 		src\RoslynAnalyzers\Utilities\Compiler\Analyzer.Utilities.projitems*{0a1267e9-52ff-b8de-8522-802be55f41da}*SharedItemsImports = 5
 		src\RoslynAnalyzers\Utilities\FlowAnalysis\FlowAnalysis.Utilities.projitems*{0a1267e9-52ff-b8de-8522-802be55f41da}*SharedItemsImports = 5

src/Analyzers/Core/Analyzers/Formatting/AbstractFormattingAnalyzer.cs

@@ -2,6 +2,7 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using Microsoft.CodeAnalysis.Collections;
 using Microsoft.CodeAnalysis.Diagnostics;
 using Microsoft.CodeAnalysis.Formatting;
 using Microsoft.CodeAnalysis.Text;

src/Analyzers/Core/CodeFixes/GenerateConstructor/AbstractGenerateConstructorService.cs

@@ -10,6 +10,7 @@
 using System.Threading.Tasks;
 using Microsoft.CodeAnalysis.CodeActions;
 using Microsoft.CodeAnalysis.CodeGeneration;
+using Microsoft.CodeAnalysis.Collections;
 using Microsoft.CodeAnalysis.Diagnostics.Analyzers.NamingStyles;
 using Microsoft.CodeAnalysis.Internal.Log;
 using Microsoft.CodeAnalysis.LanguageService;

src/Analyzers/VisualBasic/Analyzers/RemoveUnnecessaryImports/VisualBasicRemoveUnnecessaryImportsDiagnosticAnalyzer.vb

@@ -5,6 +5,7 @@
 Imports System.Collections.Immutable
 Imports System.Threading
 Imports Microsoft.CodeAnalysis
+Imports Microsoft.CodeAnalysis.Collections
 Imports Microsoft.CodeAnalysis.Diagnostics
 Imports Microsoft.CodeAnalysis.LanguageService
 Imports Microsoft.CodeAnalysis.PooledObjects

src/Compilers/CSharp/CSharpAnalyzerDriver/CSharpDeclarationComputer.cs

@@ -10,6 +10,7 @@
 using System.Diagnostics;
 using System.Linq;
 using System.Threading;
+using Microsoft.CodeAnalysis.Collections;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.PooledObjects;
 using Microsoft.CodeAnalysis.Text;

src/Compilers/CSharp/Portable/Binder/Binder.CapturedParametersFinder.cs

@@ -4,6 +4,7 @@
 
 using System.Collections.Generic;
 using System.Diagnostics;
+using Microsoft.CodeAnalysis.Collections;
 using Microsoft.CodeAnalysis.CSharp.Symbols;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.PooledObjects;

src/Compilers/CSharp/Portable/Declarations/DeclarationTable.cs

@@ -6,6 +6,7 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Threading;
+using Microsoft.CodeAnalysis.Collections;
 using Microsoft.CodeAnalysis.PooledObjects;
 using Roslyn.Utilities;
 

src/Compilers/CSharp/Portable/Emitter/EditAndContinue/EmitHelpers.cs

@@ -10,6 +10,7 @@
 using System.Reflection.Metadata;
 using System.Threading;
 using Microsoft.CodeAnalysis.CodeGen;
+using Microsoft.CodeAnalysis.Collections;
 using Microsoft.CodeAnalysis.CSharp.Symbols;
 using Microsoft.CodeAnalysis.CSharp.Symbols.Metadata.PE;
 using Microsoft.CodeAnalysis.Emit;

src/Compilers/CSharp/Portable/Emitter/Model/AssemblyReference.cs

@@ -6,11 +6,12 @@
 
 using System;
 using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Diagnostics;
 using System.Reflection;
+using Microsoft.CodeAnalysis.Collections;
 using Microsoft.CodeAnalysis.CSharp.Symbols;
 using Roslyn.Utilities;
-using System.Diagnostics;
-using System.Collections.Immutable;
 
 namespace Microsoft.CodeAnalysis.CSharp.Emit
 {

src/Compilers/CSharp/Portable/Emitter/Model/FunctionPointerTypeSymbolAdapter.cs

@@ -7,6 +7,7 @@
 using System.Reflection.Metadata;
 using System.Threading;
 using Microsoft.Cci;
+using Microsoft.CodeAnalysis.Collections;
 using Microsoft.CodeAnalysis.Emit;
 using Microsoft.CodeAnalysis.Symbols;
 using Roslyn.Utilities;