I noticed that scoped_mmap.h included config.h, and that scoped_mmap.c
included defs.h.  This patch fixes both of these problems.
Tested by the buildbot.
gdb/ChangeLog
2019-05-06  Tom Tromey  <tom@tromey.com>
	* common/scoped_mmap.c: Include common-defs.h.
	* common/scoped_mmap.h: Don't include config.h.
+2019-05-06  Tom Tromey  <tom@tromey.com>
+
+       * common/scoped_mmap.c: Include common-defs.h.
+       * common/scoped_mmap.h: Don't include config.h.
+
 2019-05-04  Tom Tromey  <tom@tromey.com>
 
        * aarch64-tdep.c (stack_item_t): Remove typedef and DEF_VEC.
 
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#include "defs.h"
+#include "common-defs.h"
 #include "scoped_mmap.h"
 #include "scoped_fd.h"
 #include "common/filestuff.h"
 
 #ifndef COMMON_SCOPED_MMAP_H
 #define COMMON_SCOPED_MMAP_H
 
-#include "config.h"
-
 #ifdef HAVE_SYS_MMAN_H
 
 #include <sys/mman.h>