re PR libfortran/70311 (libgfortran build dies on "implicit declaration of function strncasecmp")

	PR libfortran/70311
	* intrinsics/selected_char_kind.c: Include <strings.h> header.
	* runtime/environ.c: Include <strings.h> header.
	* runtime/string.c: Include <strings.h> header.

From-SVN: r243843

libgfortran/ChangeLog

+2016-12-21  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
+
+	PR libfortran/70311
+	* intrinsics/selected_char_kind.c: Include <strings.h> header.
+	* runtime/environ.c: Include <strings.h> header.
+	* runtime/string.c: Include <strings.h> header.
+
 2016-12-21  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
 
 	* gfortran.map: Remove _gfortran_ftell2.

libgfortran/intrinsics/selected_char_kind.c

@@ -25,7 +25,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
 #include "libgfortran.h"
 
-#include <string.h>
+#include <strings.h>
 
 
 extern GFC_INTEGER_4 selected_char_kind (gfc_charlen_type, char *);

libgfortran/runtime/environ.c

@@ -25,6 +25,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #include "libgfortran.h"
 
 #include <string.h>
+#include <strings.h>
 #include <stdlib.h>
 #include <ctype.h>
 

libgfortran/runtime/string.c

@@ -24,6 +24,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
 #include "libgfortran.h"
 #include <string.h>
+#include <strings.h>
 #include <stdlib.h>