Upgrade lazy_static to 0.2.x

Author: upsuper

libbindgen/Cargo.toml

@@ -27,7 +27,7 @@ quasi_codegen = "0.26"
 cexpr = "0.2"
 cfg-if = "0.1.0"
 clang-sys = { version = "0.11.1", features = ["gte_clang_3_6", "gte_clang_3_7", "gte_clang_3_8", "gte_clang_3_9"] }
-lazy_static = "0.1.*"
+lazy_static = "0.2.1"
 libc = "0.2"
 rustc-serialize = "0.3.19"
 syntex_syntax = "0.50"