Run check-include-guards.py

This patch is the result of running check-include-guards.py on the
current tree.  Running it a second time causes no changes.

Reviewed-By: Tom de Vries <tdevries@suse.de>

gdbsupport/gdb_unlinker.h

@@ -17,8 +17,8 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#ifndef COMMON_GDB_UNLINKER_H
-#define COMMON_GDB_UNLINKER_H
+#ifndef GDBSUPPORT_GDB_UNLINKER_H
+#define GDBSUPPORT_GDB_UNLINKER_H
 
 namespace gdb
 {
@@ -57,4 +57,4 @@ class unlinker
 
 }
 
-#endif /* COMMON_GDB_UNLINKER_H */
+#endif /* GDBSUPPORT_GDB_UNLINKER_H */