Fixed a std::FILE issue in gmp.h and a missing <cstdlib> in t-locale.cc

gmp-h.in

@@ -529,8 +529,10 @@ typedef __mpq_struct *mpq_ptr;
 
 #if defined (__cplusplus)
 extern "C" {
+#ifdef _GMP_H_HAVE_FILE
 using std::FILE;
 #endif
+#endif
 
 #define mp_set_memory_functions __gmp_set_memory_functions
 __GMP_DECLSPEC void mp_set_memory_functions __GMP_PROTO ((void *(*) (size_t),

tests/cxx/t-locale.cc

@@ -21,6 +21,7 @@ MA 02110-1301, USA. */
 
 #include <clocale>
 #include <iostream>
+#include <cstdlib>
 
 #include "gmp.h"
 #include "gmp-impl.h"