Test cross-platform symlink and +x permission expectations on Windows #5073

Job	Run time
pure-rust-build	2m 6s
test	13m 31s
lint	3m 58s
test-32bit (armv7-linux-androideabi)	1m 7s
cargo-deny (advisories)	28s
check-packetline (ubuntu-latest)	6s
cargo-deny (bans licenses sources)	28s
WebAssembly (wasm32-unknown-unknown)	1m 5s
WebAssembly (wasm32-wasi)	41s
test-fast (windows-latest)	14m 14s
test-fast (macos-latest)	2m 56s
test-fast (ubuntu-latest)	3m 47s
Tests pass	1s
	44m 28s

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