* Makefile.am (DEFS): Added. automake adds -I options to DEFS,

and we don't want that.
(INCLUDES): Removed all -I options except for the root source
directory and the root build directory.

* *.*: Change includes so that they always use the "prefixes"
libguile/, qt/, guile-readline/, or libltdl/.
(Thanks to Tim Mooney.)

libguile/boolean.c

@@ -45,10 +45,10 @@
 
 
 #include <stdio.h>
-#include "_scm.h"
+#include "libguile/_scm.h"
 
-#include "validate.h"
-#include "boolean.h"
+#include "libguile/validate.h"
+#include "libguile/boolean.h"
 
 
 
@@ -76,7 +76,7 @@ SCM_DEFINE (scm_boolean_p, "boolean?", 1, 0, 0,
 void
 scm_init_boolean ()
 {
-#include "boolean.x"
+#include "libguile/boolean.x"
 }