Compensate for V3 changes

From-SVN: r37666

gcc/testsuite/g++.old-deja/g++.law/virtual3.C

@@ -8,6 +8,7 @@
 #include <iostream.h>
 #include <strstream.h>
 
+using namespace std;
 
 class BugStream : public ostrstream {
 public:

gcc/testsuite/g++.old-deja/g++.other/headers1.C

@@ -41,7 +41,6 @@
 #include <stack>
 #include <stdexcept>
 #include <string>
-#include <strstream>
 #include <typeinfo>
 #include <utility>
 #include <valarray>

gcc/testsuite/g++.old-deja/g++.robertl/eb21.C

@@ -2,6 +2,8 @@
 
 #include <strstream.h>
 
+using namespace std;
+
 /*----------------------------------------*/
 
 struct connection_t {

gcc/testsuite/g++.old-deja/g++.robertl/eb39.C

@@ -6,6 +6,8 @@
 #include <strstream.h>
 #include <string.h>
 
+using namespace std;
+
 extern bool foo2 (ostream &out, istream &in);
 
 bool

gcc/testsuite/g++.old-deja/g++.robertl/eb77.C

 #include <stream.h>
 #include <strstream.h>
 
+using namespace std;
+
 int
 main(int, char* [])
 {