Merge pull request #1505 from emilio/revert-clang-sys-up

Revert #1489.

Author: emilio

Cargo.lock

@@ -14,7 +14,7 @@ readme = "README.md"
 repository = "https://github.com/rust-lang/rust-bindgen"
 documentation = "https://docs.rs/bindgen"
 homepage = "https://rust-lang.github.io/rust-bindgen/"
-version = "0.47.0"
+version = "0.47.1"
 build = "build.rs"
 
 include = [
@@ -48,7 +48,7 @@ cexpr = "0.3.3"
 cfg-if = "0.1.0"
 # This kinda sucks: https://github.com/rust-lang/cargo/issues/1982
 clap = "2"
-clang-sys = { version = "0.27.0", features = ["runtime", "clang_6_0"] }
+clang-sys = { version = "0.26.4", features = ["runtime", "clang_6_0"] }
 lazy_static = "1"
 peeking_take_while = "0.1.2"
 quote = { version = "0.6", default-features = false }