Update Ghoul repository to have the factory return unique_ptrs

Adjust accordingly

include/openspace/rendering/renderable.h

@@ -59,7 +59,7 @@ public:
         Overlay = 8
     };
 
-    static Renderable* createFromDictionary(const ghoul::Dictionary& dictionary);
+    static std::unique_ptr<Renderable> createFromDictionary(const ghoul::Dictionary& dictionary);
 
     // constructors & destructor
     Renderable();

include/openspace/rendering/screenspacerenderable.h

@@ -36,6 +36,8 @@
 #include <ghoul/opengl/texture.h>
 #include <ghoul/opengl/textureunit.h>
 
+#include <memory>
+
 namespace openspace {
 
 namespace documentation { struct Documentation; }
@@ -49,7 +51,7 @@ namespace documentation { struct Documentation; }
  */
 class ScreenSpaceRenderable : public properties::PropertyOwner {
 public:
-    static ScreenSpaceRenderable* createFromDictionary(
+    static std::unique_ptr<ScreenSpaceRenderable> createFromDictionary(
         const ghoul::Dictionary& dictionary);
 
     ScreenSpaceRenderable(const ghoul::Dictionary& dictionary);

include/openspace/scene/rotation.h

@@ -29,6 +29,8 @@
 
 #include <openspace/util/updatestructures.h>
 
+#include <memory>
+
 namespace ghoul { class Dictionary; }
 
 namespace openspace {
@@ -37,7 +39,7 @@ namespace documentation { struct Documentation; }
 
 class Rotation : public properties::PropertyOwner {
 public:
-    static Rotation* createFromDictionary(const ghoul::Dictionary& dictionary);
+    static std::unique_ptr<Rotation> createFromDictionary(const ghoul::Dictionary& dictionary);
 
     Rotation(const ghoul::Dictionary& dictionary);
     virtual ~Rotation();

include/openspace/scene/scale.h

@@ -36,7 +36,7 @@ namespace documentation { struct Documentation; };
 
 class Scale : public properties::PropertyOwner {
 public:
-    static Scale* createFromDictionary(const ghoul::Dictionary& dictionary);
+    static std::unique_ptr<Scale> createFromDictionary(const ghoul::Dictionary& dictionary);
 
     virtual ~Scale();
     virtual bool initialize();

include/openspace/scene/scenegraphnode.h

@@ -97,7 +97,7 @@ public:
 
     const PerformanceRecord& performanceRecord() const { return _performanceRecord; }
 
-    void setRenderable(Renderable* renderable);
+    void setRenderable(std::unique_ptr<Renderable> renderable);
     const Renderable* renderable() const;
     Renderable* renderable();
 
@@ -115,7 +115,7 @@ private:
 
     PerformanceRecord _performanceRecord;
 
-    Renderable* _renderable;
+    std::unique_ptr<Renderable> _renderable;
     bool _renderableVisible;
 
     bool _boundingSphereVisible;

include/openspace/scene/translation.h

@@ -29,6 +29,8 @@
 
 #include <openspace/util/updatestructures.h>
 
+#include <memory>
+
 namespace ghoul { class Dictionary; }
 
 namespace openspace {
@@ -37,7 +39,7 @@ namespace documentation {  struct Documentation; }
 
 class Translation : public properties::PropertyOwner {
 public:
-    static Translation* createFromDictionary(const ghoul::Dictionary& dictionary);
+    static std::unique_ptr<Translation> createFromDictionary(const ghoul::Dictionary& dictionary);
 
     virtual ~Translation();
     virtual bool initialize();