…al --bless

Now that we have {to|from}_be_bytes the code can be simpler.

(Inspired by PR rust-lang#57740)

… the move was partial

Since the generic-ness is only for the as_refs, might as well have std just compile the important part once instead of on every use.

I felt the description of forbid was misleading/incomplete without
mentioning how --cap-lints interacts with it.

Implemented the following methods on PathBuf which
forward to the underlying OsString.

- capacity
- with_capacity
- clear
- reserve
- reserve_exact
- shrink_to_fit
- shrink_to

This lets the default `fn main()` unwrap any `Result`s, which
allows the use of `?` in most tests without adding it manually.

- Fixed incorrect `mut` usage
- Fixed style in accordance with tidy
- Marked all methods as unstable
- Changed feature identifier to path_buf_alias_os_string_methods

Feature gate changed to `path_buf_capacity` as per advice from @Mark-Simulacrum

The rustc "-g" CLI flag was miss documented to be a synonym of "-C
debug-level=2" and not the correct "-C debuginfo=2".

The rustc "-g" and "-o" fags are synonyms of the "-c" codegen flags.
This adds a link to the codegen docs for each synonym.

…r=Centril

Deny the `overflowing_literals` lint for all editions

The `overflowing_literals` was made deny by default for the 2018 edition by rust-lang#54507, however I'm not aware of any reason it can't be made deny by default for the 2015 edition as well.

… r=GuillaumeGomez

Modify doctest's auto-`fn main()` to allow `Result`s

This lets the default `fn main()` ~~return `impl Termination`~~ unwrap Results, which allows the use of `?` in most tests without adding it manually. This fixes rust-lang#56260

~~Blocked on `std::process::Termination` stabilization.~~

Using `Termination` would have been cleaner, but this should work OK.

…s-surrounding-lifetimes, r=estebank

Suggest removing parentheses surrounding lifetimes

Fixes rust-lang#57386.

r? @estebank

…stebank

Add better error message for partial move

closes rust-lang#56657

r? @davidtwco

…ay, r=QuietMisdreavus

Improve stability tags display

The issue was the font color on dark theme. Fixed now:

<img width="352" alt="screenshot 2019-02-08 at 14 15 24" src="https://user-images.githubusercontent.com/3050060/52483276-bd810380-2bb3-11e9-8d46-95368569ac85.png">

r? @QuietMisdreavus

…nteractions, r=oli-obk

Fix search results interactions

The bug is visible when you search for "none": the second tab is empty and therefore it messes with the classes. Then when you try to use arrows on the third tab, it just crashes (because only 2 "search-results" are present and you're on tab 3).

r? @QuietMisdreavus

…=oli-obk

Use less explicit shifting in std::net::ip

Now that we have `{to|from}_be_bytes` the code can be simpler.

(Inspired by PR rust-lang#57740)

Don't use an allocation for ItemId in StmtKind

Monomorphize less code in fs::{read|write}

Since the generic-ness is only for the as_refs, might as well have std just compile the important part once instead of on every use.

…ts, r=oli-obk

Mention capping forbid lints

I felt the description of forbid was misleading/incomplete without
mentioning how --cap-lints interacts with it.

…RalfJung

Remove UB in pointer tests

UB found by Miri.

…acrum

Add alias methods to PathBuf for underlying OsString (rust-lang#58234)

Implemented the following methods on PathBuf which forward to the underlying OsString.

- capacity
- with_capacity
- clear
- reserve
- reserve_exact
- shrink_to_fit
- shrink_to

These methods have been documented with reference to the original docs for `OsString`. @Mark-Simulacrum please let me know if you feel this does not suffice.

Further, I've not yet included tests for these definitions - please advise on how comprehensive tests need to be for methods such as these that simply alias other (already tested) methods.

(This PR addresses issue rust-lang#58234)

…TimNN

Fix doc for rustc "-g" flag

The rustc `-g` CLI flag was miss documented to be a synonym of `-C debug-level=2` and not `-C debuglevel=2`. Also add links to the codegen docs for each synonym.

I am unsure of this will conflict with work on rust-lang#52938

…Centril

Add regression test for a specialization-related ICE (rust-lang#39448)

Closes rust-lang#39448.

This is my first time contributing, I hope I got everything right. :)

Explain a panic in test case net::tcp::tests::double_bind

Those who try to build libstd on the Windows Subsystem for Linux experience a single failing test, where the point of failure is an explicit but anonymous panic, as reported in rust-lang#49367
This commit somewhat explains why and allows diagnosing a little.

Add a note about 2018e if someone uses `try {` in 2015e

Inspired by rust-lang#58491, where a `try_blocks` example was accidentally run in 2015, which of course produces a bunch of errors.

What's the philosophy about gating for this?  The keyword is stably a keyword in 2018, so I haven't gated it for now but am not mentioning what the keyword _does_.  Let me know if I should do differently.