added preprocessor macro in glw config to disable assertion on not existing program uniforms.

wrap/glw/config.h

@@ -13,4 +13,8 @@
 #	define GLW_PRINT_LOG_TO_STDERR 1
 #endif
 
+#ifndef GLW_ASSERT_UNIFORM_LOCATION
+#	define GLW_ASSERT_UNIFORM_LOCATION 0
+#endif
+
 #endif // GLW_CONFIG_H

wrap/glw/program.h

@@ -235,7 +235,9 @@ class Program : public Object
 
 		GLint getUniformLocation(const std::string & name) const
 		{
+#if GLW_ASSERT_UNIFORM_LOCATION
 			GLW_ASSERT(this->m_uniforms.count(name) > 0);
+#endif
 			return this->m_uniforms.find(name)->second.location;
 		}