Include <config.h> in standalone tests.

* test-suite/standalone/Makefile.am (test_cflags): Add `-I$(top_builddir)' so
  that <config.h> can be found.
  (snarfcppopts): Likewise.

* test-suite/standalone/*.c: Include <config.h>.

test-suite/standalone/Makefile.am

@@ -32,13 +32,15 @@ TESTS_ENVIRONMENT = "${top_builddir}/pre-inst-guile-env"
 
 test_cflags =					\
   -I$(top_srcdir)/test-suite/standalone		\
-  -I$(top_srcdir) \
+  -I$(top_srcdir) -I$(top_builddir)		\
   $(EXTRA_DEFS) $(GUILE_CFLAGS)
 
 AM_LDFLAGS = $(GUILE_CFLAGS)
 
 snarfcppopts =						\
-  $(DEFS) $(DEFAULT_INCLUDES) $(CPPFLAGS) $(CFLAGS) -I$(top_srcdir)
+  $(DEFS) $(DEFAULT_INCLUDES) $(CPPFLAGS) $(CFLAGS)	\
+  -I$(top_srcdir) -I$(top_builddir)
+
 SUFFIXES = .x
 .c.x:
 	${top_builddir}/libguile/guile-snarf -o $@ $< $(snarfcppopts)

test-suite/standalone/test-asmobs-lib.c

@@ -15,6 +15,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#ifndef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
 #include <libguile.h>
 
 long asmob000;

test-suite/standalone/test-gh.c

@@ -17,6 +17,10 @@
 
 /* some bits originally by Jim Blandy <jimb@red-bean.com> */
 
+#ifndef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
 #include <libguile.h>
 #include <libguile/gh.h>
 

test-suite/standalone/test-list.c

@@ -17,6 +17,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#ifndef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
 #include <libguile.h>
 
 #include <stdio.h>

test-suite/standalone/test-num2integral.c

@@ -15,6 +15,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#ifndef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
 #include <libguile.h>
 
 #include <stdio.h>

test-suite/standalone/test-with-guile-module.c

@@ -15,6 +15,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#ifndef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
 #include <pthread.h>
 #include <libguile.h>