Removed some obsolete Perl bindings.

Removed libslic3r from the default include paths for all modules but
libslic3r. Now headers from libslic3r need to be included with an
explicit path (libslic3r/libslic3r.h etc)
Split the localization macros into I18N.{cpp,h}

src/slic3r/Utils/Duet.cpp

@@ -19,6 +19,7 @@
 
 #include "libslic3r/PrintConfig.hpp"
 #include "slic3r/GUI/GUI.hpp"
+#include "slic3r/GUI/I18N.hpp"
 #include "slic3r/GUI/MsgDialog.hpp"
 #include "Http.hpp"
 

src/slic3r/Utils/FixModelByWin10.cpp

@@ -32,6 +32,7 @@
 #include "libslic3r/Print.hpp"
 #include "libslic3r/Format/3mf.hpp"
 #include "../GUI/GUI.hpp"
+#include "../GUI/I18N.hpp"
 #include "../GUI/PresetBundle.hpp"
 
 #include <wx/msgdlg.h>

src/slic3r/Utils/OctoPrint.cpp

@@ -8,6 +8,8 @@
 #include "libslic3r/PrintConfig.hpp"
 #include "Http.hpp"
 
+#include "slic3r/GUI/I18N.hpp"
+
 namespace fs = boost::filesystem;
 
 

src/slic3r/Utils/PresetUpdater.cpp

@@ -18,13 +18,14 @@
 #include "libslic3r/libslic3r.h"
 #include "libslic3r/Utils.hpp"
 #include "slic3r/GUI/GUI.hpp"
+#include "slic3r/GUI/I18N.hpp"
 #include "slic3r/GUI/PresetBundle.hpp"
 #include "slic3r/GUI/UpdateDialogs.hpp"
 #include "slic3r/GUI/ConfigWizard.hpp"
+#include "slic3r/GUI/GUI_App.hpp"
 #include "slic3r/Utils/Http.hpp"
 #include "slic3r/Config/Version.hpp"
 #include "slic3r/Config/Snapshot.hpp"
-#include "slic3r/GUI/GUI_App.hpp"
 
 namespace fs = boost::filesystem;
 using Slic3r::GUI::Config::Index;

src/slic3r/Utils/PrintHostSendDialog.cpp

@@ -10,7 +10,7 @@
 
 #include "slic3r/GUI/GUI.hpp"
 #include "slic3r/GUI/MsgDialog.hpp"
-
+#include "slic3r/GUI/I18N.hpp"
 
 namespace fs = boost::filesystem;