Implemented volumetric flow rate hints,

removed some C++11 conditioned compilation. Slic3r now requires C++11.

xs/xsp/typemap.xspt

@@ -205,6 +205,8 @@
 %typemap{Ref<PresetCollection>}{simple};
 %typemap{PresetBundle*};
 %typemap{Ref<PresetBundle>}{simple};
+%typemap{PresetHints*};
+%typemap{Ref<PresetHints>}{simple};
 
 %typemap{PrintRegionPtrs*};
 %typemap{PrintObjectPtrs*};