Remove deprecated owned vector from iterator example.
Register new snapshots
std: Rename {Eq,Ord} to Partial{Eq,Ord}

This is part of the ongoing renaming of the equality traits. See #12517 for more
details. All code using Eq/Ord will temporarily need to move to Partial{Eq,Ord}
or the Total{Eq,Ord} traits. The Total traits will soon be renamed to {Eq,Ord}.

cc #12517

[breaking-change]
auto merge of #14547 : reem/rust/remove-owned-vec-docs, r=alexcrichton

The last example in the containers and iterators guide had a superfluous owned vector in it. Everything works fine without it, so I removed it to avoid confusion.
syntax: Prepare for Total{Eq,Ord} => {Eq,Ord}

This commit adds the groundwork for the renaming of the Total{Eq,Ord} traits.
After this commit hits a snapshot, the traits can be renamed.
Add os::split_paths

Adds a platform-specific function, `split_paths` to the `os` module. This
function can be used to parse PATH-like environment variables according to
local platform conventions.

Closes #14352.
auto merge of #14534 : alexcrichton/rust/snapshots, r=sfackler

This is part 2 of the saga of renaming the Partial/Total equality and comparison traits.
Remove deprecated owned vector from complement cheatsheet.
Remove deprecated owned vector from intro.
Remove deprecated owned vector from macro guide.
Remove deprecated owned vector from rust.md
Remove deprecated owned vector from tutorial.
auto merge of #14544 : aturon/rust/issue-14352, r=alexcrichton

Adds a platform-specific function, `split_paths` to the `os` module. This
function can be used to parse PATH-like environment variables according to
local platform conventions.

Closes #14352.
auto merge of #14553 : reem/rust/nuke-owned-vectors, r=alexcrichton

I removed all remaining deprecated owned vectors from the docs. All example tests pass.
Make the match arm type mismatch message point to the arm's span

Fixes #11319