For crates `alloc`–`collections`. This is mostly just updating a few function/method descriptions to use the indicative style. 

cc #4361; I’ve sort of assumed that the third-person indicative style has been decided on, but I could update this to use the imperative style if that’s preferred, or even update this to remove all function-style-related changes. (I think that standardising on one thing, even if it’s not the ‘best’ option, is still better than having no standard at all.) The indicative style seems to be more common in the Rust standard library at the moment, especially in the newer modules (e.g. `collections::vec`), more popular in the discussion about it, and also more popular amongst other languages (see https://github.com/rust-lang/rust/issues/4361#issuecomment-33470215).

This incidentally fixes #16589, because it will cause `MatchIndices` to use `NaiveSearcher` instead of `TwoWaySearcher`, but I'm not sure #16589 should be closed until the underlying problem in `TwoWaySearcher` is found.

Closes #16514

Fixes #15954 and #16354.

Fixes #16569

This was bothering me (and some other people). The macro was necessary in a transient step of my development, but I converged on a design where it was unnecessary, but it didn't really click that that had happened.

This fixes it up.

This implements `Add` and `Sub` for `Timespec`, which enables `Timespec` to be used as a time span. For example:

```rust
let begin = get_time();
// Do some stuff.
let end = get_time();
let delta = end - begin;
println!("Doing stuff took {}.{:09d} seconds.", delta.sec, delta.nsec);
```
This resolves one of the points mentioned in #2153.

Just some simple changes to the guide.

Fixes #14948

Fixes #9099

Fixes #16354.

Fies #16239.

Fixes #15954

Closes #16514

Fies #16239.

of `use bar as foo`.

Change all uses of `use foo = bar` to `use bar as foo`.

Implements RFC #47.

Closes #16461.

[breaking-change]

r? @aturon

Fixes #16569

Fixes #14948

Fixes #9099

This has certain implications that are wrong.

Fixes #16299.

This has certain implications that are wrong.

Fixes #16299.

of `use bar as foo`.

Change all uses of `use foo = bar` to `use bar as foo`.

Implements RFC #47.

Closes #16461.

[breaking-change]

Closes #8761.
Closes #16010.
Closes #13033.
Closes #15094.

Prevents zero-width spaces from appearing in copy-pasted paths.

Fixes #16555

First commit enables regex test on Windows. It was not working at some point (#13725), but it works now.

Second commit removes various FIXMEs regarding #13793, since upstream bug has been fixed.

LLVM assertion error has been fixed recently:
http://llvm.org/bugs/show_bug.cgi?id=18993

Fixes #13793

Fixes #13725

Fixes #16149.

This is enough for dynamic libraries, but not executables because MinGW
does not output a .reloc section even with `--dynamicbase`. It could
either be worked around by exporting a DLL symbol from the executable or
fixed in MinGW itself.

These were the only differing-size-based errors I noticed. Might be more.

Closes #8761.
Closes #16010.
Closes #13033.
Closes #15094.