unknown API-MS-Win pseudo-dll

Hi,
I got this error:

```
[..]

```
I've checked and `RegisterWaitForInputIdle` its at `kernel32.dll`:
```
>dumpbin /exports "C:\Windows\System32\kernel32.dll" | grep RegisterWaitForInputIdle
1190 4A5 00010B10 RegisterWaitForInputIdle
```

Should I do a PR adding both DLLs (`pseudo-dll api-ms-win-core-localization-obsolete-l1-2-0.dll` and `pseudo-dll api-ms-win-core-kernel32-private-l1-1-0.dll`) in here

https://github.com/DynamoRIO/dynamorio/blob/master/core/win32/loader.c#L1534
??

Regards