From: Marcus Sundberg <e94_msu@elixir.e.kth.se>
  To  : ggi-develop@eskimo.com
  Date: Mon, 13 Jul 1998 21:50:55 +0200

Libggi internal changes

I have now done some work on separating libggi internals from the
libggi API. The result is that any source-file belonging to a target
should ONLY include ggi-dl.h, which should provide everything it      
needs.
Applications should include ggi/ggi.h.           
Any code that wishes to access libggi internals (extensions and also
tunemode.c) should include internal.h. They should NOT include
ggi/ggi.h and they should NOT define _BUILDING_LIBGGI.

//Marcus