Manual fixes

Author: tamasvajk

csharp/ql/test/library-tests/asp/basic/Test.cs

@@ -1,4 +1,4 @@
-
+// semmle-extractor-options: ${testdir}/../../../resources/stubs/System.Web.cs /r:System.Collections.Specialized.dll
 
 using System;
 using System.Web;

csharp/ql/test/library-tests/asp/basic/options

@@ -1,3 +1,2 @@
 semmle-extractor-options: /langversion:8.0
 semmle-extractor-options: /r:System.Threading.Tasks.dll /r:System.Threading.Tasks.Extensions.dll /r:netstandard.dll /langversion:preview
-semmle-extractor-options: /langversion:8.0

csharp/ql/test/library-tests/csharp8/options

@@ -22,4 +22,4 @@ void M1()
   {
     Console.WriteLine("3");
   }
-}
+}

csharp/ql/test/library-tests/csharp9/GlobalStmt.cs

@@ -2,5 +2,5 @@
 
 class SBCS
 {
-    string sbcs = "�";
+    string sbcs = "’";
 }

csharp/ql/test/library-tests/encoding/SBCS.cs

@@ -1,4 +1,4 @@
-
+// semmle-extractor-options: /r:${testdir}/../../../../resources/assemblies/System.Data.dll /r:${testdir}/../../../../resources/assemblies/System.Web.dll /r:${testdir}/../../../../resources/assemblies/System.Web.Mvc.dll /r:System.ComponentModel.Primitives.dll /r:System.Collections.Specialized.dll /r:${testdir}/../../../../resources/assemblies/System.Net.Http.dll
 
 using System;
 using System.Data.SqlClient;

csharp/ql/test/query-tests/Security Features/CWE-079/StoredXSS/StoredXSS.cs

@@ -1,5 +1,3 @@
-
-
 using System;
 using System.IO;
 using System.Text;