programs: Store the project version when overriding find_program #16682

Job	Run time
Ubuntu Rolling (gcc, g++)	1m 40s
Ubuntu Rolling (--unity=on -Ddefault_library=static, --no-unittests, gcc, g++)	1m 42s
Arch / PyPy	1m 43s
Ubuntu Rolling (-Ddefault_library=both, --no-unittests, gcc, g++)	1m 42s
Arch Linux	1m 39s
Ubuntu Rolling (clang, clang++)	1m 41s
CUDA (on Arch)	1m 41s
Ubuntu Rolling (--unity=on, --no-unittests, clang, clang++)	1m 42s
Fedora	1m 36s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, 0, gcc, g++)	1m 42s
Gentoo	1m 38s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, --unity=on, gcc, g++)	1m 44s
OpenSUSE	30s
Ubuntu Bionic	25s
	21m 5s

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