Build the profiler runtime to allow using -C profile-generate and -C instrument-coverage on POWER systems.

I have verified locally that the runtime builds and the profiler is working fine on the platform.

* Examples take up less screen height.
* Snippets from binary crates are prioritized.
* toggle-all-docs does not expand "More examples" sections.

…tton colors w/ themes

* The rule `display: block` had no noticeable effect. Technically, because
  markdown tables have a tbody and thead, they get wrapped in an [anonymous
  table box] in the CSS tree, nested within the `<table>` element's block
  layout box.

  This rule was added in rust-lang#87230 to make the table side-scrolling, but
  this same issue was doubly fixed in rust-lang#88742 by wrapping it in an explicit
  `<div>` tag. Since accessibility advocates recommend the wrapper div over
  marking the table as `display: block`, we'll stick with that.

  https://adrianroselli.com/2020/11/under-engineered-responsive-tables.html

* The rule `width: calc(100% - 2px)` had no visible effect, because the
  anonymous table box was not affected.

* The style is tweaked to basically be the same style GitHub uses.
  In particular, it adds zebra stripes, and removes dotted borders.

[anonymous table box]: https://www.w3.org/TR/CSS2/tables.html#anonymous-boxes

… r=notriddle

Remove unused GUI test

It's not testing anything so better just remove it.

r? `@notriddle`

attempt to clarify align_to docs

This is not intended the change the docs at all, but `@workingjubilee` said the current docs are incomprehensible to some people so this is an attempt to fix that. No idea if it helps, so -- feedback welcome.

(Please let's not use this to discuss *changing* the spec. Whoever wants to change the spec should please make a separate PR for that.)

…provements, r=notriddle

Improve Rustdoc scrape-examples UI

This PR combines a few different improvements to the scrape-examples UI. See a live demo here: https://willcrichton.net/misc/scrape-examples/small-first-example/clap/struct.Arg.html

### 1. The first scraped example now takes up significantly less screen height.
Inserting the first scraped example takes up a lot of vertical screen space. I don't want this addition to overwhelm users, so I decided to reduce the height of the initial example in two ways: (A) the default un-expanded height is reduced from 240px (10 LOC) to 120px (5 LOC), and (B) the link to the example is now positioned *over* the example instead of *atop* the example (only on desktop though, not mobile). The changes to `scrape-examples.js` and `rustdoc.css` implement this fix.

Here is what an example docblock now looks like:

![Screen Shot 2022-12-06 at 10 02 21 AM](https://user-images.githubusercontent.com/663326/205987450-3940063c-5973-4a34-8579-baff6a43aa9b.png)

### 2. Expanding all docblocks will not expand "More examples".
The "More examples blocks" are huge, so fully expanding everything on the page would take up too much vertical space. The changes to `main.js` implement this fix. This is tested in `scrape-examples-toggle.goml`.

### 3. Examples from binary crates are sorted higher than examples from library crates.
Code that is written as an example of an API is probably better for learning than code that happens to use an API, but isn't intended for pedagogic purposes. Unfortunately Rustc doesn't know whether a particular crate comes from an example target (only Cargo knows this). But we can at least create a proxy that prefers examples from binary crates over library crates, which we know from `--crate-type`.

This change is implemented by adding a new field `bin_crate` in `Options` (see `config.rs`). An `is_bin` field has been added to the scraped examples metadata (see `scrape_examples.rs`). Then the example sorting metric uses `is_bin` as the first entry of a lexicographic sort on `(is_bin, example_size, display_name)` (see `render/mod.rs`).

Note that in the future we can consider adding another flag like `--scrape-examples-cargo-target` that would pass target information from Cargo into the example metadata. But I'm proposing a less intrusive change for now.

### 4. The scrape-examples help page has been updated to reflect the latest Cargo interface.

See `scrape-examples-help.md`.

r? `@notriddle`

P.S. once this PR and rust-lang/cargo#11450 are merged, then I think the scrape-examples feature is officially ready for deployment on docs.rs!

…crum

Enable profiler in dist-powerpc64le-linux

Build the profiler runtime to allow using -C profile-generate and -C instrument-coverage on POWER little endian systems.

I have verified locally that the runtime builds and the profiler is working fine on the platform.

Similar pull request for a different system: rust-lang#104304

…e-rustdoc-errors, r=notriddle

Dont silently ignore rustdoc errors

I applied the suggestions from rust-lang#104995 and also checked the rustdoc-ui error but couldn't reproduce it.

r? `@notriddle`

…-css, r=GuillaumeGomez

rustdoc: clean up docblock table CSS

# Preview

http://notriddle.com/notriddle-rustdoc-demos/table-2/test_dingus/fn.test.html

# Before

![image](https://user-images.githubusercontent.com/1593513/206364287-1b80eaaf-2e0e-4138-8b56-4aa8ff39abac.png)

# After

![image](https://user-images.githubusercontent.com/1593513/206364209-d287d165-31be-4de1-9b43-05b35ce2a86b.png)

# Details

* The rule `display: block` had no noticeable effect. Technically, because markdown tables have a tbody and thead, they get wrapped in an [anonymous table box] in the CSS tree, nested within the `<table>` element's block layout box.

  This rule was added in rust-lang#87230 to make the table side-scrolling, but this same issue was doubly fixed in rust-lang#88742 by wrapping it in an explicit `<div>` tag. Since accessibility advocates recommend the wrapper div over marking the table as `display: block`, we'll stick with that.

  https://adrianroselli.com/2020/11/under-engineered-responsive-tables.html

* The rule `width: calc(100% - 2px)` had no visible effect, because the anonymous table box was not affected.

* The style is tweaked to basically be the same style GitHub uses. In particular, it adds zebra stripes, and removes dotted borders.

  https://rust-lang.zulipchat.com/#narrow/stream/266220-rustdoc/topic/Markdown.20table.20styling

[anonymous table box]: https://www.w3.org/TR/CSS2/tables.html#anonymous-boxes

Move some queries and methods

Each commit's title should be self-explanatory. Motivated to break up some large, general files and move queries into leaf crates.

…=jackh726

use the correct `Reveal` during validation

supersedes rust-lang#105454. Deals with rust-lang#105009 (comment), not closing rust-lang#105009 as the ICE may leak into beta

The issue was the following:
- we optimize the mir, using `Reveal::All`
- some optimization relies on the hidden type of an opaque type
- we then validate using `Reveal::UserFacing` again which is not able to observe the hidden type

r? `@jackh726`

…earth

Clippy: backport ICE fix before beta branch

r? `@Manishearth`

Before beta is branched tomorrow we should backport the fix from rust-lang/rust-clippy#10027 for an ICE. That way we'll get this into stable one release sooner.

This only cherry-picks the fix, not the tests for it. The proper sync of this will be done next week Thursday.

lib docs: fix typo

r? `@thomcc`