8224974: Implement JEP 352

Non-Volatile Mapped Byte Buffers

Reviewed-by: alanb, kvn, bpb, gromero, darcy, shade, bulasevich, dchuyko

src/hotspot/os/bsd/os_bsd.cpp

@@ -3803,6 +3803,10 @@ int os::get_core_path(char* buffer, size_t bufferSize) {
   return n;
 }
 
+bool os::supports_map_sync() {
+  return false;
+}
+
 #ifndef PRODUCT
 void TestReserveMemorySpecial_test() {
   // No tests available for this platform