Determine support for -fminimize-whitespace via test execution. #2647

Job	Run time
build sccache x86_64-unknown-linux-musl	24s
build sccache-dist x86_64-unknown-linux-musl	22s
build sccache aarch64-unknown-linux-musl	49s
build sccache x86_64-apple-darwin	11s
build sccache aarch64-apple-darwin	23s
build sccache x86_64-pc-windows-msvc	37s
coverage ubuntu-20.04 rust nightly	2m 53s
coverage macOS-11 rust nightly	5m 50s
clippy ubuntu-latest	50s
clippy macOS-latest	1m 15s
clippy windows-latest	1m 27s
rustfmt ubuntu-latest	14s
test freebsd-13.1 rust stable (macos-12, 13.1)	17m 11s
test ubuntu-20.04 rust 1.65.0	54s
test ubuntu-22.04 rust 1.65.0 dist-server	1m 1s
test ubuntu-20.04 rust stable	44s
test ubuntu-20.04 rust beta	23s
test ubuntu-20.04 rust nightly	27s
test ubuntu-22.04 rust stable	16s
test macOS-11 rust stable	11s
test windows-2019 rust 1.65.0	1m 22s
test windows-2019 rust nightly	55s
test windows-2019 rust beta	38s
toml_format	7s
release	0s
	39m 24s

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