Make sockopt_impl! public #1647

Job	Run time
macos-aarch64	1m 43s
macos	2m 51s
linux_native_builds (x86_64-unknown-linux-gnu)	2m 21s
linux_native_builds (x86_64-unknown-linux-musl)	2m 35s
minver	13s
rust_stable	1m 22s
rustfmt	4s
solaris (x86_64-pc-solaris)	3m 47s
tier3 (x86_64-unknown-dragonfly)	1m 0s
tier3 (x86_64-unknown-openbsd)	59s
tier3 (x86_64-unknown-haiku)	58s
tier3 (armv7-unknown-linux-uclibceabihf)	1m 12s
redox	39s
cross (arm-unknown-linux-gnueabi)	1m 51s
cross_compiling (aarch64-linux-android)	41s
cross (armv7-unknown-linux-gnueabihf)	1m 54s
cross_compiling (arm-linux-androideabi)	39s
cross (i686-unknown-linux-gnu)	1m 53s
cross_compiling (armv7-linux-androideabi)	42s
cross (i686-unknown-linux-musl)	1m 56s
cross_compiling (i686-linux-android)	37s
cross (mips-unknown-linux-gnu)	1m 48s
cross_compiling (x86_64-linux-android)	42s
cross (mips64-unknown-linux-gnuabi64)	1m 50s
cross_compiling (arm-unknown-linux-musleabi)	39s
cross (mips64el-unknown-linux-gnuabi64)	1m 53s
cross_compiling (x86_64-unknown-fuchsia)	33s
cross (mipsel-unknown-linux-gnu)	1m 54s
cross_compiling (x86_64-unknown-illumos)	31s
cross (powerpc64le-unknown-linux-gnu)	1m 57s
cross_compiling (aarch64-apple-ios, true)	36s
cross (loongarch64-unknown-linux-gnu)	1m 48s
cross_compiling (powerpc64-unknown-linux-gnu)	44s
cross_compiling (s390x-unknown-linux-gnu)	43s
cross_compiling (x86_64-unknown-linux-gnux32)	44s
cross_compiling (x86_64-unknown-netbsd)	35s
	46m 54s

Provide feedback