[Cin] Thirdparty makefile patch

[mat]

Please find attached a thirdparty/Makefile patch,
that corrects the two remaining invalid dummy configure scripts.
Tested on Fedora_35/X86_64 and Debian_11/aarch64.
This fix does not fix any problems, it only clears up
the process. CinGG will build fine without it, but with this patch
all thirdparty sources are treated the same.

MatN
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