DSTify Hash

- The signature of the `*_equiv` methods of `HashMap` and similar structures
have changed, and now require one less level of indirection. Change your code
from:

```
hashmap.find_equiv(&"Hello");
hashmap.find_equiv(&&[0u8, 1, 2]);
```

to:

```
hashmap.find_equiv("Hello");
hashmap.find_equiv(&[0u8, 1, 2]);
```

- The generic parameter `T` of the `Hasher::hash<T>` method have become
`Sized?`. Downstream code must add `Sized?` to that method in their
implementations. For example:

```
impl Hasher<FnvState> for FnvHasher {
    fn hash<T: Hash<FnvState>>(&self, t: &T) -> u64 { /* .. */ }
}
```

must be changed to:

```
impl Hasher<FnvState> for FnvHasher {
    fn hash<Sized? T: Hash<FnvState>>(&self, t: &T) -> u64 { /* .. */ }
    //      ^^^^^^
}
```

[breaking-change]

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libregex/re.rs b/src/libregex/re.rs
index d352739f853..08d73d3434f 100644
--- a/src/libregex/re.rs
+++ b/src/libregex/re.rs
@@ -724,7 +724,7 @@ impl<'t> Captures<'t> {
         match self.named {
             None => "",
             Some(ref h) => {
-                match h.find_equiv(&name) {
+                match h.find_equiv(name) {
                     None => "",
                     Some(i) => self.at(*i),
                 }