Rework stringize() #125

Job	Run time
docker	1m 20s
thirdparty-tests (test_perl)	10m 22s
thirdparty-tests (test_cello)	23s
thirdparty-tests (test_curl)	9m 19s
thirdparty-tests (test_doom)	25s
thirdparty-tests (test_git)	18m 23s
thirdparty-tests (test_libpng)	2m 19s
thirdparty-tests (test_libuev)	48s
thirdparty-tests (test_lua)	43s
thirdparty-tests (test_metalang99)	52s
thirdparty-tests (test_oniguruma_jq)	57s
thirdparty-tests (test_openssh)	4m 58s
thirdparty-tests (test_openssl)	16m 52s
thirdparty-tests (test_php)	6m 43s
thirdparty-tests (test_postgres)	3m 48s
thirdparty-tests (test_python)	26m 14s
thirdparty-tests (test_qbe_hare)	23s
thirdparty-tests (test_sqlite)	3m 16s
thirdparty-tests (test_tinycc)	27s
thirdparty-tests (test_toxcore)	4m 42s
thirdparty-tests (test_toybox)	51s
thirdparty-tests (test_vim)	1m 51s
thirdparty-tests (test_zlib)	22s
thirdparty-tests (test_zstd)	1m 30s
thirdparty-tests (build_gcc)	10m 36s
thirdparty-tests (build_musl)	1m 24s
thirdparty-tests (build_nano)	1m 0s
thirdparty-tests (build_sdl)	2m 3s
thirdparty-tests (build_zig)	8m 43s
	2h 21m 34s

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