Start cleanup of unique_ptr tests.

One of the last sections of tests that still fail in C++03 are the unique_ptr
tests. This patch begins cleaning up the tests and fixing C++03 failures.

The main changes of this patch:
  - The "Deleter" type in "deleter.h" tried to be "move-only" in C++03. However
    the move simulation no longer works (see "__rv"). "Deleter" is now copy
    constructible in C++03. However copying "Deleter" will "move" the test value
    instead of copying it.

  - Reduce the unique.ptr.single.ctor tests files from ~25 to 4. There is no
    reason the tests were split through so many files.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@243730 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/memory/unique.ptr/unique.ptr.runtime/move01.fail.cpp

@@ -14,26 +14,15 @@
 // Test unique_ptr move assignment
 
 #include <memory>
-#include <utility>
-#include <cassert>
 
-// Can't copy from lvalue
-
-struct A
-{
-    static int count;
-    A() {++count;}
-    A(const A&) {++count;}
-    ~A() {--count;}
-};
-
-int A::count = 0;
+#include "test_macros.h"
 
 int main()
 {
-    {
-    std::unique_ptr<A> s(new A);
-    std::unique_ptr<A> s2;
-    s2 = s;
-    }
+    std::unique_ptr<int> s, s2;
+#if TEST_STD_VER >= 11
+    s2 = s; // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
+#else
+    s2 = s; // expected-error {{'operator=' is a private member of 'std::__1::unique_ptr}}
+#endif
 }