[libcxx] Improve tests to use the UNSUPPORTED lit directive

Quite a few libcxx tests seem to follow the format:
 #if _LIBCPP_STD_VER > X
   // Do test.
 #else
   // Empty test.
 #endif
We should instead use the UNSUPPORTED lit directive to exclude the test on
earlier C++ standards. This gives us a more accurate number of test passes
for those standards and avoids unnecessary conflicts with other lit
directives on the same tests.

Reviewers: bcraig, ericwf, mclow.lists

Differential revision: http://reviews.llvm.org/D20730

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@271108 91177308-0d34-0410-b5e6-96231b3b80d8

test/libcxx/experimental/containers/sequences/dynarray/dynarray.overview/at.pass.cpp

@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 // XFAIL: libcpp-no-exceptions
 // dynarray.overview
 
@@ -15,8 +16,6 @@
   
 #include <__config>
 
-#if _LIBCPP_STD_VER > 11
-
 #include <experimental/dynarray>
 #include <cassert>
 
@@ -90,6 +89,4 @@ int main()
     test<std::complex<double>> ( {} );
     test<std::string> ( {} );
 }
-#else
-int main() {}
-#endif
+

test/libcxx/experimental/containers/sequences/dynarray/dynarray.overview/begin_end.pass.cpp

@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 // dynarray.overview
 
 
@@ -27,8 +28,6 @@
   
 #include <__config>
 
-#if _LIBCPP_STD_VER > 11
-
 #include <experimental/dynarray>
 #include <cassert>
 
@@ -103,6 +102,4 @@ int main()
     test<std::complex<double>> ( std::complex<double> ( 14, 0 ));
     test<std::string> ( "fourteen" );
 }
-#else
-int main() {}
-#endif
+

test/libcxx/experimental/containers/sequences/dynarray/dynarray.overview/capacity.pass.cpp

@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 // dynarray.overview
 
 // size_type size()     const noexcept;
@@ -15,8 +16,6 @@
 
 #include <__config>
 
-#if _LIBCPP_STD_VER > 11
-
 #include <experimental/dynarray>
 #include <cassert>
 
@@ -52,6 +51,4 @@ int main()
     test<std::complex<double>> ( {} );
     test<std::string> ( {} );
 }
-#else
-int main() {}
-#endif
+

test/libcxx/experimental/containers/sequences/dynarray/dynarray.overview/indexing.pass.cpp

@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
 // dynarray.overview
 
 // const_reference at(size_type n) const;
@@ -14,8 +15,6 @@
   
 #include <__config>
 
-#if _LIBCPP_STD_VER > 11
-
 #include <experimental/dynarray>
 #include <cassert>
 
@@ -66,6 +65,4 @@ int main()
     test<std::complex<double>> ( {} );
     test<std::string> ( {} );
 }
-#else
-int main() {}
-#endif
+