Added an application framework for demos. Ported hello-triangle example in Op...

third_party/gles_book_examples/Common/Source/Win32/esUtil_TGA.c

 //
 // Book:      OpenGL(R) ES 2.0 Programming Guide
 // Authors:   Aaftab Munshi, Dan Ginsburg, Dave Shreiner
 // ISBN-10:   0321502795
 // ISBN-13:   9780321502797
 // Publisher: Addison-Wesley Professional
 // URLs:      http://safari.informit.com/9780321563835
 //            http://www.opengles-book.com
 //
 
 // esUtil_TGA.c
 //
 //    This file contains the Win32 implementation of a TGA image loader
 
+#ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN
+#endif  // WIN32_LEAN_AND_MEAN
+
 #include <windows.h>
 #include <stdio.h>
 #include <stdlib.h>
 
 ///
 //  Macros
 //
 #define INVERTED_BIT            (1 << 5)
 
 ///
@@ skipping 88 matching lines @@
             }
          
          fclose(fp);
          free(Buffer24);
          return(TRUE);
       }         
    }
 
    return(FALSE);
 }