Fixes to build on openSUSE/Packman. (#67)

- Support different BINDIR, INCLUDEDIR and LIBDIR on install
- Take right python dir on x86_64 arch
- Fix build against Boost >= 1.58
- Make it possible to build libIfcGeom shared to reduce size of dependent binaries
- Fix INSTALL_RPATH
- Fix some more compiler warnings

src/ifcconvert/ColladaSerializer.h

@@ -106,8 +106,8 @@ private:
 		public:
 			explicit ColladaMaterials(COLLADASW::StreamWriter& stream, ColladaSerializer *_serializer)
 				: COLLADASW::LibraryMaterials(&stream)
-				, effects(stream)
-                , serializer(_serializer)
+				, serializer(_serializer)
+		                , effects(stream)
 			{}
 			void add(const IfcGeom::Material& material);
 			bool contains(const IfcGeom::Material& material);
@@ -152,10 +152,10 @@ private:
 		ColladaExporter(const std::string& scene_name, const std::string& fn, ColladaSerializer *_serializer)
             : filename(fn)
             , stream(filename, sizeof(real_t) == sizeof(double)) // utilise Collada stream's double precision feature
-			, geometries(stream, _serializer)
 			, scene(scene_name, stream, _serializer)
 			, materials(stream, _serializer)
-            , serializer(_serializer)
+			, geometries(stream, _serializer)
+			, serializer(_serializer)
 		{
         }
         ColladaMaterials materials;

src/ifcconvert/SvgSerializer.h

@@ -47,8 +47,8 @@ public:
 		: GeometrySerializer(settings)
 		, svg_file(out_filename.c_str())
 		, xmin(+std::numeric_limits<double>::infinity())
-		, xmax(-std::numeric_limits<double>::infinity())
 		, ymin(+std::numeric_limits<double>::infinity())
+		, xmax(-std::numeric_limits<double>::infinity())
 		, ymax(-std::numeric_limits<double>::infinity())
 		, rescale(false)
 		, file(0)

src/ifcconvert/WavefrontObjSerializer.h

@@ -37,8 +37,8 @@ private:
 public:
 	WaveFrontOBJSerializer(const std::string& obj_filename, const std::string& mtl_filename, const IfcGeom::IteratorSettings &settings)
 		: GeometrySerializer(settings)
-		, obj_stream(obj_filename.c_str())
 		, mtl_filename(mtl_filename)
+		, obj_stream(obj_filename.c_str())
 		, mtl_stream(mtl_filename.c_str())		
 		, vcount_total(1)
 	{}