On kqueue platforms, make it so the EV_EOF flag corresponds to the "is_interrupt" flag. #951

Job	Run time
msrv (ubuntu-latest)	47s
fmt	12s
msrv (windows-latest)	54s
clippy	13s
cross (ubuntu-latest, nightly)	2m 14s
security_audit	9s
cross (ubuntu-latest, stable)	1m 37s
cross (macos-latest, nightly)	1m 27s
wine	1m 38s
test (ubuntu-latest, nightly)	1m 35s
cross (macos-latest, stable)	1m 18s
test (ubuntu-latest, beta)	1m 44s
test (ubuntu-latest, stable)	1m 33s
test (windows-latest, nightly)	1m 41s
test (windows-latest, beta)	2m 3s
test (windows-latest, stable)	2m 10s
test (macos-latest, nightly)	1m 18s
test (macos-latest, beta)	1m 4s
test (macos-latest, stable)	1m 3s
test (windows-latest, nightly-x86_64-pc-windows-gnu)	2m 13s
test (windows-latest, nightly-i686-pc-windows-msvc)	2m 34s
test (windows-latest, nightly-i686-pc-windows-gnu)	2m 22s
	31m 49s

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