[libc++] Add UNSUPPORTED markup for shared_mutex and shared_timed_mutex tests

The tests were previously disabled entirely whenever availability markup
was enabled. Instead, enable the tests but add the proper UNSUPPORTED
markup.

Author: ldionne

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/lit.local.cfg

@@ -9,6 +9,11 @@
 // UNSUPPORTED: libcpp-has-no-threads
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: with_system_cxx_lib=macosx10.11
+// UNSUPPORTED: with_system_cxx_lib=macosx10.10
+// UNSUPPORTED: with_system_cxx_lib=macosx10.9
+
 // <shared_mutex>
 
 // class shared_mutex;

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/assign.fail.cpp

@@ -9,6 +9,11 @@
 // UNSUPPORTED: libcpp-has-no-threads
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: with_system_cxx_lib=macosx10.11
+// UNSUPPORTED: with_system_cxx_lib=macosx10.10
+// UNSUPPORTED: with_system_cxx_lib=macosx10.9
+
 // <shared_mutex>
 
 // class shared_mutex;

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/copy.fail.cpp

@@ -9,6 +9,11 @@
 // UNSUPPORTED: libcpp-has-no-threads
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: with_system_cxx_lib=macosx10.11
+// UNSUPPORTED: with_system_cxx_lib=macosx10.10
+// UNSUPPORTED: with_system_cxx_lib=macosx10.9
+
 // <shared_mutex>
 
 // class shared_mutex;

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/default.pass.cpp

@@ -11,6 +11,11 @@
 
 // ALLOW_RETRIES: 2
 
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: with_system_cxx_lib=macosx10.11
+// UNSUPPORTED: with_system_cxx_lib=macosx10.10
+// UNSUPPORTED: with_system_cxx_lib=macosx10.9
+
 // <shared_mutex>
 
 // class shared_mutex;

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock.pass.cpp

@@ -11,6 +11,11 @@
 
 // ALLOW_RETRIES: 2
 
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: with_system_cxx_lib=macosx10.11
+// UNSUPPORTED: with_system_cxx_lib=macosx10.10
+// UNSUPPORTED: with_system_cxx_lib=macosx10.9
+
 // <shared_mutex>
 
 // class shared_mutex;

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock_shared.pass.cpp

@@ -11,6 +11,11 @@
 
 // ALLOW_RETRIES: 2
 
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: with_system_cxx_lib=macosx10.11
+// UNSUPPORTED: with_system_cxx_lib=macosx10.10
+// UNSUPPORTED: with_system_cxx_lib=macosx10.9
+
 // <shared_mutex>
 
 // class shared_mutex;

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/try_lock.pass.cpp

@@ -11,6 +11,11 @@
 
 // ALLOW_RETRIES: 2
 
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: with_system_cxx_lib=macosx10.11
+// UNSUPPORTED: with_system_cxx_lib=macosx10.10
+// UNSUPPORTED: with_system_cxx_lib=macosx10.9
+
 // <shared_mutex>
 
 // class shared_mutex;

libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/try_lock_shared.pass.cpp

@@ -7,6 +7,12 @@
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: c++98, c++03, c++11
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: with_system_cxx_lib=macosx10.11
+// UNSUPPORTED: with_system_cxx_lib=macosx10.10
+// UNSUPPORTED: with_system_cxx_lib=macosx10.9
+
 // <shared_mutex>
 
 // class shared_timed_mutex;