Output the runtime helper in sources instead of headers.

src/Generator/Generators/CLI/CLIHeadersTemplate.cs

@@ -28,6 +28,9 @@ namespace CppSharp.Generators.CLI
             WriteLine("#pragma once");
             NewLine();
 
+            if (Options.OutputInteropIncludes)
+                WriteLine("#include \"CppSharp.h\"");
+
             PushBlock(CLIBlockKind.IncludesForwardReferences);
             WriteLine("#include <{0}>", TranslationUnit.IncludePath);
             GenerateIncludeForwardRefs();

src/Generator/Generators/CLI/CLISourcesTemplate.cs

@@ -34,9 +34,6 @@ namespace CppSharp.Generators.CLI
             WriteLine("#include \"{0}.h\"", file);
             GenerateForwardReferenceHeaders();
 
-            if (Options.OutputInteropIncludes)
-                WriteLine("#include <clix.hpp>");
-
             NewLine();
             PopBlock();