Replace deprecated Win API calls in Win32_EntropySource

* GetTickCount is replaced by GetTickCount64(): see https://msdn.microsoft.com/en-us/library/windows/desktop/ms724408(v=vs.85).aspx for details
* GlobalMemoryStatus is replaced by GlobalMemoryStatusEx: see https://msdn.microsoft.com/en-us/library/windows/desktop/aa366589(v=vs.85).aspx for details

src/lib/entropy/win32_stats/es_win32.cpp

@@ -20,7 +20,7 @@ void Win32_EntropySource::poll(Entropy_Accumulator& accum)
  First query a bunch of basic statistical stuff, though
  don't count it for much in terms of contributed entropy.
  */
- accum.add(GetTickCount(), BOTAN_ENTROPY_ESTIMATE_SYSTEM_DATA);
+ accum.add(GetTickCount64(), BOTAN_ENTROPY_ESTIMATE_SYSTEM_DATA);
  accum.add(GetMessagePos(), BOTAN_ENTROPY_ESTIMATE_SYSTEM_DATA);
  accum.add(GetMessageTime(), BOTAN_ENTROPY_ESTIMATE_SYSTEM_DATA);
  accum.add(GetInputState(), BOTAN_ENTROPY_ESTIMATE_SYSTEM_DATA);
@@ -32,8 +32,8 @@ void Win32_EntropySource::poll(Entropy_Accumulator& accum)
  GetSystemInfo(&sys_info);
  accum.add(sys_info, BOTAN_ENTROPY_ESTIMATE_STATIC_SYSTEM_DATA);
 
- MEMORYSTATUS mem_info;
- GlobalMemoryStatus(&mem_info);
+ MEMORYSTATUSEX mem_info;
+ GlobalMemoryStatusEx(&mem_info);
  accum.add(mem_info, BOTAN_ENTROPY_ESTIMATE_SYSTEM_DATA);
 
  POINT point;