updated makefile for supporting different target architectures

use "ARCH=arch_name make"

restructured project folder, implementations and headers together under sources/

sources/GL_STUFF/GL_STUFF.cpp

@@ -0,0 +1,9 @@
+// GL_STUFF.cpp : Defines the functions for the static library.
+//
+
+#include "framework.h"
+
+// TODO: This is an example of a library function
+void fnGLSTUFF()
+{
+}