Add sigsuspend (#2279) #21

Job	Run time
rust_stable	1m 11s
linux_native_builds (x86_64-unknown-linux-gnu)	1m 24s
macos	1m 51s
minver	17s
linux_native_builds (x86_64-unknown-linux-musl)	1m 19s
rustfmt	12s
tier3 (x86_64-unknown-dragonfly)	1m 3s
tier3 (x86_64-unknown-openbsd)	1m 1s
tier3 (x86_64-unknown-haiku)	55s
tier3 (i686-unknown-hurd-gnu)	56s
redox	40s
cross_compiling (aarch64-linux-android)	37s
cross (arm-unknown-linux-gnueabi)	1m 47s
cross_compiling (arm-linux-androideabi)	37s
cross (armv7-unknown-linux-gnueabihf)	1m 44s
cross_compiling (armv7-linux-androideabi)	42s
cross (i686-unknown-linux-gnu)	1m 54s
cross_compiling (i686-linux-android)	35s
cross (i686-unknown-linux-musl)	1m 52s
cross_compiling (x86_64-linux-android)	36s
cross (mips-unknown-linux-gnu)	1m 46s
cross_compiling (arm-unknown-linux-musleabi)	37s
cross (mips64-unknown-linux-gnuabi64)	1m 58s
cross (mips64el-unknown-linux-gnuabi64)	1m 46s
cross_compiling (x86_64-unknown-fuchsia)	30s
cross (mipsel-unknown-linux-gnu)	1m 45s
cross_compiling (x86_64-unknown-illumos)	28s
cross (powerpc64le-unknown-linux-gnu)	1m 39s
cross_compiling (aarch64-apple-ios, true)	29s
cross_compiling (powerpc64-unknown-linux-gnu)	35s
cross_compiling (s390x-unknown-linux-gnu)	2m 0s
cross_compiling (x86_64-unknown-linux-gnux32)	36s
cross_compiling (x86_64-unknown-netbsd)	27s
	35m 49s

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