Handle fallout in io::net::addrinfo, io::process, and rt::rtio

API Changes:

- get_host_addresses() returns IoResult<Vec<IpAddr>>
- Process.extra_io is Vec<Option<io::PipeStream>>

src/libstd/io/net/addrinfo.rs

@@ -24,7 +24,7 @@ use io::IoResult;
 use io::net::ip::{SocketAddr, IpAddr};
 use option::{Option, Some, None};
 use rt::rtio::{IoFactory, LocalIo};
-use slice::OwnedVector;
+use vec::Vec;
 
 /// Hints to the types of sockets that are desired when looking up hosts
 pub enum SocketType {
@@ -73,7 +73,7 @@ pub struct Info {
 
 /// Easy name resolution. Given a hostname, returns the list of IP addresses for
 /// that hostname.
-pub fn get_host_addresses(host: &str) -> IoResult<~[IpAddr]> {
+pub fn get_host_addresses(host: &str) -> IoResult<Vec<IpAddr>> {
     lookup(Some(host), None, None).map(|a| a.move_iter().map(|i| i.address.ip).collect())
 }
 
@@ -90,7 +90,7 @@ pub fn get_host_addresses(host: &str) -> IoResult<~[IpAddr]> {
 /// FIXME: this is not public because the `Hint` structure is not ready for public
 ///      consumption just yet.
 fn lookup(hostname: Option<&str>, servname: Option<&str>, hint: Option<Hint>)
-          -> IoResult<~[Info]> {
+          -> IoResult<Vec<Info>> {
     LocalIo::maybe_raise(|io| io.get_host_addresses(hostname, servname, hint))
 }
 

src/libstd/io/process.rs

@@ -69,7 +69,7 @@ pub struct Process {
 
     /// Extra I/O handles as configured by the original `ProcessConfig` when
     /// this process was created. This is by default empty.
-    pub extra_io: ~[Option<io::PipeStream>],
+    pub extra_io: Vec<Option<io::PipeStream>>,
 }
 
 /// This configuration describes how a new process should be spawned. A blank
@@ -418,7 +418,7 @@ impl Drop for Process {
         drop(self.stdin.take());
         drop(self.stdout.take());
         drop(self.stderr.take());
-        drop(mem::replace(&mut self.extra_io, box []));
+        drop(mem::replace(&mut self.extra_io, Vec::new()));
 
         self.wait();
     }

src/libstd/rt/rtio.rs

@@ -161,7 +161,7 @@ pub trait IoFactory {
     fn unix_connect(&mut self, path: &CString,
                     timeout: Option<u64>) -> IoResult<Box<RtioPipe:Send>>;
     fn get_host_addresses(&mut self, host: Option<&str>, servname: Option<&str>,
-                          hint: Option<ai::Hint>) -> IoResult<~[ai::Info]>;
+                          hint: Option<ai::Hint>) -> IoResult<Vec<ai::Info>>;
 
     // filesystem operations
     fn fs_from_raw_fd(&mut self, fd: c_int, close: CloseBehavior)