Replace hoedown with pull in rustdoc

.gitmodules

@@ -5,10 +5,6 @@
 [submodule "src/compiler-rt"]
 	path = src/compiler-rt
 	url = https://github.com/rust-lang/compiler-rt.git
-[submodule "src/rt/hoedown"]
-	path = src/rt/hoedown
-	url = https://github.com/rust-lang/hoedown.git
-	branch = rust-2015-09-21-do-not-delete
 [submodule "src/jemalloc"]
 	path = src/jemalloc
 	url = https://github.com/rust-lang/jemalloc.git

src/libcore/result.rs

@@ -838,10 +838,10 @@ impl<T: Default, E> Result<T, E> {
     ///
     /// assert_eq!(1909, good_year);
     /// assert_eq!(0, bad_year);
+    /// ```
     ///
     /// [`parse`]: ../../std/primitive.str.html#method.parse
     /// [`FromStr`]: ../../std/str/trait.FromStr.html
-    /// ```
     #[inline]
     #[stable(feature = "result_unwrap_or_default", since = "1.16.0")]
     pub fn unwrap_or_default(self) -> T {

src/librustdoc/Cargo.toml

@@ -2,7 +2,6 @@
 authors = ["The Rust Project Developers"]
 name = "rustdoc"
 version = "0.0.0"
-build = "build.rs"
 
 [lib]
 name = "rustdoc"
@@ -26,6 +25,7 @@ rustc_trans = { path = "../librustc_trans" }
 serialize = { path = "../libserialize" }
 syntax = { path = "../libsyntax" }
 syntax_pos = { path = "../libsyntax_pos" }
+pulldown-cmark = { version = "0.0.14", default-features = false }
 
 [build-dependencies]
 build_helper = { path = "../build_helper" }