collections: impl Deref for Vec/String

This commit adds the following impls:

    impl<T> Deref<[T]> for Vec<T>
    impl<T> DerefMut<[T]> for Vec<T>
    impl Deref<str> for String

This commit also removes all duplicated inherent methods from vectors and
strings as implementations will now silently call through to the slice
implementation. Some breakage occurred at std and beneath due to inherent
methods removed in favor of those in the slice traits and std doesn't use its
own prelude,

cc #18424

2 files changed, 2 insertions, 1 deletions

diff --git a/src/libstd/io/comm_adapters.rs b/src/libstd/io/comm_adapters.rs
index bd9577c8cfc..338d293fa0a 100644
--- a/src/libstd/io/comm_adapters.rs
+++ b/src/libstd/io/comm_adapters.rs
@@ -15,7 +15,7 @@ use comm::{Sender, Receiver};
 use io;
 use option::{None, Some};
 use result::{Ok, Err};
-use slice::{bytes, CloneableVector};
+use slice::{bytes, CloneableVector, ImmutableSlice};
 use super::{Buffer, Reader, Writer, IoResult};
 use vec::Vec;
 
diff --git a/src/libstd/io/net/addrinfo.rs b/src/libstd/io/net/addrinfo.rs
index 9d85701eb29..eaf47bb004c 100644
--- a/src/libstd/io/net/addrinfo.rs
+++ b/src/libstd/io/net/addrinfo.rs
@@ -125,6 +125,7 @@ fn lookup(hostname: Option<&str>, servname: Option<&str>, hint: Option<Hint>)
 // permission without help of apk
 #[cfg(all(test, not(target_os = "android")))]
 mod test {
+    use prelude::*;
     use super::*;
     use io::net::ip::*;