Add Socket::(set_)multicast_all_v{4,6} #1000

Job	Run time
Check (armv7-sony-vita-newlibeabihf)	31s
Check (i686-unknown-hurd-gnu)	30s
Check (aarch64-apple-ios)	7s
Check (aarch64-linux-android)	15s
Docs (aarch64-apple-ios)	14s
Check (x86_64-apple-darwin)	9s
Clippy	12s
Docs (armv7-sony-vita-newlibeabihf)	26s
Check (x86_64-unknown-fuchsia)	22s
Docs (aarch64-linux-android)	18s
Docs (i686-unknown-hurd-gnu)	27s
Check (x86_64-pc-windows-msvc)	8s
Docs (x86_64-apple-darwin)	22s
Rustfmt	12s
Check (x86_64-pc-solaris)	10s
Docs (x86_64-unknown-fuchsia)	18s
Check (x86_64-unknown-freebsd)	11s
Test (stable)	56s
Docs (x86_64-pc-windows-msvc)	12s
Check (x86_64-unknown-illumos)	8s
Test (1.63.0)	1m 14s
Docs (x86_64-pc-solaris)	12s
Test (beta)	21s
Check (x86_64-unknown-linux-gnu)	46s
Docs (x86_64-unknown-freebsd)	15s
Check (x86_64-unknown-linux-musl)	12s
Test (nightly)	28s
Docs (x86_64-unknown-illumos)	12s
Docs (x86_64-unknown-linux-gnu)	17s
Check (x86_64-unknown-netbsd)	10s
Test (macos)	41s
Docs (x86_64-unknown-linux-musl)	14s
Test (windows)	1m 35s
Check (x86_64-unknown-redox)	10s
Check (armv7-linux-androideabi)	43s
Docs (x86_64-unknown-netbsd)	15s
Check (i686-linux-android)	7s
Docs (x86_64-unknown-redox)	18s
Docs (armv7-linux-androideabi)	14s
Docs (i686-linux-android)	14s
	14m 46s

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