CDS archived heap object support for 64-bit Windows

In JDK-8179302, when CDS archive heap objects was first introduced, we didn't support Windows:

https://github.com/openjdk/jdk/blob/9b11bd7f4a511ddadf9f02e82aab6ba78beb6763/src/hotspot/share/utilities/macros.hpp#L624-L625

#if INCLUDE_CDS && INCLUDE_G1GC && defined(_LP64) && !defined(_WINDOWS)
#define INCLUDE_CDS_JAVA_HEAP 1
...
#else
#define INCLUDE_CDS_JAVA_HEAP 0
#endif

The reasons were:

- The Windows implementation of os::map_memory() cannot map the contents of a file into a region that's already reserved by the garbage collector.
- We had a high failure rate for mapping the CDS archive on Windows due to ASLR, sometimes as high as 50%. So it didn't seem worth the effort (mainly testing) to support archived heap objects on Windows.

Both of the above issues were fixed in JDK-8231610. We can use the MetaspaceShared::use_windows_memory_mapping() mode introduced in JDK-8231610 in FileMapInfo::map_heap_region_impl().

E.g., change this:
https://github.com/openjdk/jdk/blame/9b11bd7f4a511ddadf9f02e82aab6ba78beb6763/src/hotspot/share/cds/filemap.cpp#L2181-L2183

to this:
  char* base;
  if (MetaspaceShared::use_windows_memory_mapping()) {
    // new code for Windows - use read()
    if (!read_region(MetaspaceShared::hp, addr,
                     align_up(_mapped_heap_memregion.byte_size(), os::vm_page_size()),
                     /* do_commit = */ true)) {
      dealloc_heap_region();
      log_error(cds)("Failed to read archived heap region at " INTPTR_FORMAT, p2i(addr));
      return false;
    }
    base = addr;
  } else {
    // old code for all other platforms: use mmap().
    base = map_memory(_fd, _full_path, r->file_offset(),
                      addr, _mapped_heap_memregion.byte_size(), r->read_only(),
                      r->allow_exec());