Upgrade aster, syntex_syntax, quasi

Author: jdub

libbindgen/Cargo.toml

@@ -24,15 +24,15 @@ tests_expectations = { path = "tests/expectations" }
 quasi_codegen = "0.20"
 
 [dependencies]
-aster = "0.28"
+aster = "0.33"
 cexpr = "0.2"
 cfg-if = "0.1.0"
 clang-sys = "0.8.0"
 lazy_static = "0.1.*"
 libc = "0.2"
 rustc-serialize = "0.3.19"
 regex = "0.1"
-quasi = "0.20"
+quasi = "0.25"
 
 [dependencies.clippy]
 optional = true
@@ -48,7 +48,7 @@ version = "0.3"
 
 [dependencies.syntex_syntax]
 optional = true
-version = "0.44"
+version = "0.48"
 
 [features]
 default = ["logging", "syntex"]

libbindgen/src/lib.rs

@@ -22,7 +22,6 @@
 #[macro_use]
 extern crate cfg_if;
 extern crate cexpr;
-extern crate syntex_syntax as syntax;
 extern crate aster;
 extern crate quasi;
 extern crate clang_sys;
@@ -31,6 +30,12 @@ extern crate regex;
 #[macro_use]
 extern crate lazy_static;
 
+#[cfg(feature = "syntex")]
+extern crate syntex_syntax as syntax;
+
+#[cfg(not(feature = "syntex"))]
+extern crate syntax;
+
 cfg_if! {
     if #[cfg(feature = "logging")] {
         #[macro_use]