[AD] Patch to change the logfile name (4.3.10)

[Colin Ward <lists@xxxxxxxxxx>]

I hope that this fits in neatly but someone else might have a suggestion
about how better to do it.

I wanted to change src/allegro.c so that it could output its allegro.log log
file to a place other than the current directory.  My beta testers were
complaining (as beta testers do) about log files being left "laying
around."

So I added a #define in include/allegro/internal/aintern.h thus:

#define ALLEGRO_LOGFILE_NAME "allegro.log"

And changed src/allegro.c to use it.  So if a platform wants to change the
log file name they can simply #undef and then re#define it in their
platform specific header file (the one defined by ALLEGRO_INTERNAL_HEADER
in the platform's *cfg.h file).

One thing though - I had to #include ALLEGRO_INTERNAL_HEADER in
src/allegro.c, as I have seen done in other files.  I was just wondering
why this isn't included by default.  I noticed that we have to #define
ALLEGRO_INTERNAL_HEADER and ALLEGRO_EXTRA_HEADER in our platform's *cfg.h
file and that ALLEGRO_EXTRA_HEADER is included at the end of
include/allegro.h.  Is there a reason only one of these is included?  Am I
missing their true purpose?

Hope the attachment makes some sense.  :-)

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Index: src/allegro.c
===================================================================
--- src/allegro.c	(revision 11138)
+++ src/allegro.c	(working copy)
@@ -23,6 +23,9 @@
 #include "allegro.h"
 #include "allegro/internal/aintern.h"
 
+#ifdef ALLEGRO_INTERNAL_HEADER
+   #include ALLEGRO_INTERNAL_HEADER
+#endif
 
 
 #define PREFIX_I                "al-main INFO: "
@@ -640,7 +643,7 @@
       if (s)
 	 trace_file = fopen(s, "w");
       else
-	 trace_file = fopen("allegro.log", "w");
+	 trace_file = fopen(ALLEGRO_LOGFILE_NAME, "w");
 
       if (debug_assert_virgin)
 	 _add_exit_func(debug_exit, "debug_exit");
Index: include/allegro/internal/aintern.h
===================================================================
--- include/allegro/internal/aintern.h	(revision 11138)
+++ include/allegro/internal/aintern.h	(working copy)
@@ -28,6 +28,10 @@
 #endif
 
 
+/* name of the log file by which to write by default.  This can be overridden by platform */
+/* specific header files if required */
+#define ALLEGRO_LOGFILE_NAME "allegro.log"
+
 /* length in bytes of the cpu_vendor string */
 #define _AL_CPU_VENDOR_SIZE 32