always include <config.h>

* ocaml/guestfs_c.c: Include <config.h>.
* examples/to-xml.c: Likewise.
* examples/hello.c: Likewise.

capitests/test-command.c

@@ -20,6 +20,7 @@
  * guestfs_command and guestfs_command_lines functions.
  */
 
+#include <config.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

examples/hello.c

@@ -4,6 +4,7 @@
  *   hello guest.img /dev/VolGroup00/LogVol00
  */
 
+#include <config.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>

examples/to-xml.c

@@ -7,6 +7,7 @@
  *   to-xml guest.img [guest.img ...]
  */
 
+#include <config.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

ocaml/guestfs_c.c

@@ -16,6 +16,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include <config.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>