Deferred lighting in progress

Now able to dynamically switch between shaders for lights and objects

--HG--
extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%4046

KREngine/KREngine/Classes/KRContext.h

@@ -17,7 +17,7 @@
 
 class KRContext {
 public:
-    KRContext(const GLchar *szVertShaderSource, const GLchar *szFragShaderSource);
+    KRContext();
     ~KRContext();
     
     void loadResource(std::string path);