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From Martin Von Loewis.
       * g++.ns/{alias2.C, alias5.C, koenig4.C, lookup3.C ns13.C,
       ns14.C, ns15.C, template3.C, undef1.C, using4.C, using5.C,
       using6.C, using7.C}:  New namespace tests.

From-SVN: r21043

gcc/testsuite/g++.old-deja/g++.ns/koenig4.C

+void f();
+void f(int);
+
+namespace A{
+  struct S{
+    void f();
+    void f(S);
+  };
+  void f(S&){}
+  void h(S&){}
+}
+
+template<class T>
+void g(T t){
+  f(t);
+}
+
+int main()
+{
+  A::S s;
+  f(s);
+  g(s);
+  h(s);
+}

gcc/testsuite/g++.old-deja/g++.ns/lookup3.C

+namespace A{
+  int i;
+  int f();
+}
+
+int A::f()
+{
+  return i;
+}
+
+main()
+{
+  return A::f();
+}

gcc/testsuite/g++.old-deja/g++.ns/ns13.C

+namespace std{ 
+  void f(){}
+  void g();
+  int i=5;
+}
+
+void std::g()
+{}
+
+main()
+{
+  return std::i-5;
+}

gcc/testsuite/g++.old-deja/g++.ns/ns14.C

+//Special g++ Options: -fhonor-std
+namespace std{ 
+  int f(){
+    return 0;
+  }
+}
+
+int f()
+{
+  return 1;
+}
+
+int main()
+{
+  return std::f();
+}

gcc/testsuite/g++.old-deja/g++.ns/ns15.C

+//Build don't link:
+namespace std {}

gcc/testsuite/g++.old-deja/g++.ns/template3.C

+//Check instantiation of templates outside their namespace
+namespace A{
+template <class T>void g(){}
+template <class T> struct B {
+  B(){
+   f();
+  }
+  void f()
+  {
+    g<T>();
+  }
+};
+}
+
+template class A::B<int>;
+A::B<int> s;
+
+int main()
+{
+  return 0;
+}

gcc/testsuite/g++.old-deja/g++.ns/undef1.C

+//Build don't link:
+namespace A{
+}
+
+struct Y: A::S<int>{};     //ERROR - no such type

gcc/testsuite/g++.old-deja/g++.ns/using4.C

+//Build don't link
+#include <vector>
+namespace csp {
+using namespace std::vector;  // ERROR - vector is not a namespace
+}

gcc/testsuite/g++.old-deja/g++.ns/using5.C

+// Build don't link:
+namespace a {
+    class b {
+	using std::c;  //ERROR - namespace using on class level
+    };
+}

gcc/testsuite/g++.old-deja/g++.ns/using6.C

+//Build don't link:
+#include <vector>
+
+namespace csp {
+    using namespace std;
+    struct X {
+	vector<int> v;
+    };
+}

gcc/testsuite/g++.old-deja/g++.ns/using7.C

+namespace X{
+  void f(int){}
+}
+
+void f();
+
+int main()
+{
+  using X::f;
+  f(3);
+}