Implemented notification system needed for occlusion culling and transparency sorting

--HG--
extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%4072

KREngine/KREngine/Classes/KRShaderManager.h

@@ -45,9 +45,9 @@ using std::vector;
 
 #define KRENGINE_MAX_SHADER_HANDLES 100
 
-class KRShaderManager {
+class KRShaderManager : public KRContextObject {
 public:
-    KRShaderManager();
+    KRShaderManager(KRContext &context);
     ~KRShaderManager();
     
     void loadFragmentShader(const std::string &name, const std::string &path);