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/libslic3r/CMakeLists.txt

@@ -174,7 +174,7 @@ if (NOT SLIC3R_SYNTAXONLY)
 endif ()
 
 target_compile_definitions(libslic3r PUBLIC -DUSE_TBB ${PNG_DEFINITIONS})
-target_include_directories(libslic3r PUBLIC ${CMAKE_CURRENT_BINARY_DIR} ${LIBNEST2D_INCLUDES} ${PNG_INCLUDE_DIRS})
+target_include_directories(libslic3r PRIVATE ${CMAKE_CURRENT_SOURCE_DIR} ${LIBNEST2D_INCLUDES} ${PNG_INCLUDE_DIRS} PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
 target_link_libraries(libslic3r
     libnest2d
     admesh

src/libslic3r/ClipperUtils.hpp

@@ -1,7 +1,7 @@
 #ifndef slic3r_ClipperUtils_hpp_
 #define slic3r_ClipperUtils_hpp_
 
-#include <libslic3r.h>
+#include "libslic3r.h"
 #include "clipper.hpp"
 #include "ExPolygon.hpp"
 #include "Polygon.hpp"

src/libslic3r/GCode/Analyzer.hpp

@@ -5,8 +5,8 @@
 #include "../PrintConfig.hpp"
 #include "../ExtrusionEntity.hpp"
 
-#include "Point.hpp"
-#include "GCodeReader.hpp"
+#include "../Point.hpp"
+#include "../GCodeReader.hpp"
 
 namespace Slic3r {
 

src/libslic3r/GCode/PreviewData.hpp

@@ -3,8 +3,7 @@
 
 #include "../libslic3r.h"
 #include "../ExtrusionEntity.hpp"
-
-#include "Point.hpp"
+#include "../Point.hpp"
 
 namespace Slic3r {