Fix multiple definitions of mk[o]stemp[s]64

ChangeLog

@@ -1,3 +1,10 @@
+2016-11-22  Andreas Schwab  <schwab@suse.de>
+
+	* misc/mkstemp.c: Include <fcntl.h>.
+	* misc/mkstemps.c: Likewise.
+	* misc/mkostemp.c: Likewise.
+	* misc/mkostemps.c: Likewise.
+
 2016-11-22  Adhemerval Zanella  <adhemerva.zanella@linaro.org>
 
 	[BZ #20847]

misc/mkostemp.c

@@ -15,6 +15,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 

misc/mkostemps.c

@@ -16,6 +16,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 

misc/mkstemp.c

@@ -15,6 +15,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 

misc/mkstemps.c

@@ -16,6 +16,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>