- moved the entire OpenGL backend into a separate namespace.

src/gl/system/gl_buffers.cpp

@@ -28,6 +28,9 @@
 #include "gl_buffers.h"
 #include "gl/renderer/gl_renderstate.h"
 
+namespace OpenGLRenderer
+{
+
 //==========================================================================
 //
 // basic buffer implementation
@@ -211,3 +214,5 @@ void GLDataBuffer::BindBase()
 {
 	glBindBufferBase(mUseType, mBindingPoint, mBufferId);
 }
+
+}