Merge #602

602: bump libc r=adamgreig a=Emilgardis

- add checksums
- bump libc


Co-authored-by: Emil Gardström <[email protected]>

Author: bors[bot]

Cargo.lock

@@ -15,7 +15,7 @@ atty = "0.2"
 error-chain = "0.12"
 home = "0.5"
 lazy_static = "1.0"
-libc = "0.2.101"
+libc = "0.2.104"
 rustc_version = "0.2"
 toml = "0.5"
 which = { version = "3.1.0", default_features = false }