Replace Unix SocketAddr with std version #481

Job	Run time
Clippy	16s
Check (aarch64-apple-ios)	32s
CheckTargets	1m 37s
Docs	51s
Check (aarch64-apple-tvos)	39s
Check (aarch64-unknown-openbsd)	32s
MinimalVersions (ubuntu-latest)	22s
Check (arm64_32-apple-watchos)	30s
MSRV (ubuntu-latest)	10s
MinimalVersions (macos-latest)	33s
Nightly	20s
Check (armv7-sony-vita-newlibeabihf)	31s
MSRV (macos-latest)	17s
MinimalVersions (windows-latest)	47s
Check (sparcv9-sun-solaris)	29s
MSRV (windows-latest)	24s
Check (x86_64-pc-solaris)	33s
Rustfmt	15s
Check (x86_64-unknown-dragonfly)	31s
Sanitizer (address)	44s
Check (x86_64-unknown-openbsd)	35s
Test (ubuntu-latest)	42s
Sanitizer (leak)	39s
Test (macos-latest)	47s
TestPoll	28s
Sanitizer (memory)	1m 5s
Test (windows-latest)	2m 40s
TestWakerPipe	27s
Sanitizer (thread)	47s
Passed	1s
	19m 4s

Provide feedback