Added missing includes for gcc

src/libslic3r/PresetBundle.cpp

@@ -4,6 +4,7 @@
 #include "libslic3r.h"
 #include "Utils.hpp"
 #include "Model.hpp"
+#include "format.hpp"
 
 #include <algorithm>
 #include <set>

src/slic3r/GUI/AboutDialog.cpp

@@ -7,6 +7,8 @@
 #include "MainFrame.hpp"
 #include "format.hpp"
 
+#include <wx/clipbrd.h>
+
 namespace Slic3r { 
 namespace GUI {