…rovements

…terministic results

  * Update Javascript to take this change into account
* Update CrateData::aliases field to take a reference instead (it allowed to remove a conversion loop)

Before:

    TokenStream [
        Ident {
            ident: "name",
            span: #0 bytes(37..41),
        },
        Punct {
            ch: '=',
            spacing: Alone,
            span: #0 bytes(42..43),
        },
        Literal { lit: Lit { kind: Str, symbol: "SNPP", suffix: None }, span: Span { lo: BytePos(44), hi: BytePos(50), ctxt: #0 } },
        Punct {
            ch: ',',
            spacing: Alone,
            span: #0 bytes(50..51),
        },
        Ident {
            ident: "owner",
            span: #0 bytes(56..61),
        },
        Punct {
            ch: '=',
            spacing: Alone,
            span: #0 bytes(62..63),
        },
        Literal { lit: Lit { kind: Str, symbol: "Canary M Burns", suffix: None }, span: Span { lo: BytePos(64), hi: BytePos(80), ctxt: #0 } },
    ]

After:

    TokenStream [
        Ident {
            ident: "name",
            span: #0 bytes(37..41),
        },
        Punct {
            ch: '=',
            spacing: Alone,
            span: #0 bytes(42..43),
        },
        Literal {
            kind: Str,
            symbol: "SNPP",
            suffix: None,
            span: #0 bytes(44..50),
        },
        Punct {
            ch: ',',
            spacing: Alone,
            span: #0 bytes(50..51),
        },
        Ident {
            ident: "owner",
            span: #0 bytes(56..61),
        },
        Punct {
            ch: '=',
            spacing: Alone,
            span: #0 bytes(62..63),
        },
        Literal {
            kind: Str,
            symbol: "Canary M Burns",
            suffix: None,
            span: #0 bytes(64..80),
        },
    ]

…ts, r=ollie27

Doc alias improvements

After [this message](rust-lang#50146 (comment)), I realized that the **doc alias**. So this PR does the followings:

 * Align the alias discovery on items added into the search-index. It brings a few nice advantages:
   * Instead of cloning the data between the two (in rustdoc source code), we now have the search-index one and aliases which reference to the first one. So we go from one big map containing a lot of duplicated data to just integers...
 * In the front-end (main.js), I improved the code around aliases to allow them to go through the same transformation as other items when we show the search results.
 * Improve the search tester in order to perform multiple requests into one file (I think it's better in this case than having a file for each case considering how many there are...)
    * I also had to add the new function inside the tester (`handleAliases`)

Once this PR is merged, I intend to finally stabilize this feature.

r? @ollie27

cc @rust-lang/rustdoc

…Dylan-DPC

remove extra space from crate-level doctest names

Before:

```
running 2 tests
test src/test/rustdoc-ui/doctest-output.rs - foo::bar (line 11) ... ok
test src/test/rustdoc-ui/doctest-output.rs -  (line 5) ... ok

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
```

After:

```
running 2 tests
test src/test/rustdoc-ui/doctest-output.rs - foo::bar (line 11) ... ok
test src/test/rustdoc-ui/doctest-output.rs - (line 5) ... ok

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
```

Remove `lang_items\(\).*\.unwrap\(\)`

Follows up rust-lang#72170 to remove the remaining uses of `lang_items\(\).*\.unwrap\(\)` (avoids a bunch of potential ICEs when working in `#![no_core]`).

Resolves rust-lang#72195

…-obk

make sure even unleashed miri does not do pointer stuff

r? @oli-obk

… r=oli-obk

[const-prop] Don't replace Rvalues that are already constants

This cleans up a few mir-opt tests which have slight changes to spans for `consts` as a result of replacing them with new Rvalues.

doc: add links to rotate_(left|right)

Fix {:#?} representation of proc_macro::Literal

Before:

```rust
TokenStream [
    Ident {
        ident: "name",
        span: #0 bytes(37..41),
    },
    Punct {
        ch: '=',
        spacing: Alone,
        span: #0 bytes(42..43),
    },
    Literal { lit: Lit { kind: Str, symbol: "SNPP", suffix: None }, span: Span { lo: BytePos(44), hi: BytePos(50), ctxt: #0 } },
    Punct {
        ch: ',',
        spacing: Alone,
        span: #0 bytes(50..51),
    },
    Ident {
        ident: "owner",
        span: #0 bytes(56..61),
    },
    Punct {
        ch: '=',
        spacing: Alone,
        span: #0 bytes(62..63),
    },
    Literal { lit: Lit { kind: Str, symbol: "Canary M Burns", suffix: None }, span: Span { lo: BytePos(64), hi: BytePos(80), ctxt: #0 } },
]
```

After:

```rust
TokenStream [
    Ident {
        ident: "name",
        span: #0 bytes(37..41),
    },
    Punct {
        ch: '=',
        spacing: Alone,
        span: #0 bytes(42..43),
    },
    Literal {
        kind: Str,
        symbol: "SNPP",
        suffix: None,
        span: #0 bytes(44..50),
    },
    Punct {
        ch: ',',
        spacing: Alone,
        span: #0 bytes(50..51),
    },
    Ident {
        ident: "owner",
        span: #0 bytes(56..61),
    },
    Punct {
        ch: '=',
        spacing: Alone,
        span: #0 bytes(62..63),
    },
    Literal {
        kind: Str,
        symbol: "Canary M Burns",
        suffix: None,
        span: #0 bytes(64..80),
    },
]
```