syzygy adjudications: add 7man and 5x speedup

[wakamex]

switched to latest tbprobe library Fathom care of @jdart1.

switched cutechess to query using a different API call tb_probe_wdl which is the thread safe function recommended for engines as per the Fathom readme. engines may care about DTZ, but for adjudication only WDL is necessary.

there may be some quirks in completely ignoring DTZ, such as scoring a win/loss that takes longer than 50 moves. could add a check to add in DTZ if they're found, maybe, but that would require enhancing the api to return the number of files found. right now it just returns a success or fail at initiation.

[artoj]

The Windows CI failed with this patch. Can you review the build output and submit an update. Thanks!

[jdart1]

I think you need to add /Tp to the Windows flags to force compilation of tbprobe.c as a C++ file (Fathom requires compilation under C99 or C++).

[ilaripih]

I think you need to add /Tp to the Windows flags to force compilation of tbprobe.c as a C++ file (Fathom requires compilation under C99 or C++).

I tried that and now I get a bunch of warnings about unsafe functions and an error:
3rdparty\fathom\src\tbprobe.c(305): error C2664: 'HANDLE CreateFileW(LPCWSTR,DWORD,DWORD,LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE)': cannot convert argument 1 from 'char *' to 'LPCWSTR'

https://ci.appveyor.com/project/artoj/cutechess/builds/33803803

[jdart1]

See wakamex#1