Add missing critical inclusions of Experimental.h to other headers

src/AllThemeResources.h

@@ -44,6 +44,7 @@ from there.  Audacity will look for a file called "Pause.png".
 // Note: No '#ifndef/#define' pair on this header file.
 // we want to include it multiple times in Theme.cpp.
 
+#include "Experimental.h"
 #include "MacroMagic.h"
 #define XPMS_RETIRED
 

src/commands/CommandManager.h

@@ -12,6 +12,8 @@
 #ifndef __AUDACITY_COMMAND_MANAGER__
 #define __AUDACITY_COMMAND_MANAGER__
 
+#include "../Experimental.h"
+
 #include <wx/string.h>
 #include <wx/dynarray.h>
 #include <wx/menu.h>

src/effects/EffectManager.h

@@ -21,6 +21,8 @@ effects.
 #ifndef __AUDACITY_EFFECTMANAGER__
 #define __AUDACITY_EFFECTMANAGER__
 
+#include "../Experimental.h"
+
 #include <wx/choice.h>
 #include <wx/dialog.h>
 #include <wx/event.h>

src/effects/Equalization.h

@@ -15,6 +15,8 @@
 #define NUM_PTS 180
 #define PANELBORDER 1   // only increase from '1' for testing purposes - MJS
 
+#include "../Experimental.h"
+
 #include <wx/button.h>
 #include <wx/panel.h>
 #include <wx/dialog.h>