Minor doc fixes in various places
Fix typo in libcore
auto merge of #14291 : Sawyer47/rust/doc-fixes, r=alexcrichton
auto merge of #14292 : limeburst/rust/master, r=alexcrichton
Rename Result.unwrap_or_handle() to .unwrap_or_else()

Result.unwrap_or_handle() is the equivalent of Option.unwrap_or_else().
In the interests of naming consistency, call it the same thing.

[breaking-change]
auto merge of #14294 : kballard/rust/result_unwrap_or_else, r=alexcrichton

Result.unwrap_or_handle() is the equivalent of Option.unwrap_or_else().
In the interests of naming consistency, call it the same thing.

[breaking-change]
libcollections: remove `init_to_vec`

The `init_to_vec` function in `collections::bitv` was exposed as an
inherent method, but appears to just be a helper function for the
`to_vec` method. This patch inlines the definition, removing
`init_to_vec` from the public API.

[breaking-change]
test: index shards at 1, not 0

This has no tests because it's near impossible to test -- since TestFn uses
`proc`s, they can not be cloned or tested for equality. The only way to really
test this is making sure that for a given number of shards `a`, sharding from
1 to `a` yields the complete set of tests. But `filter_tests` takes its vector
by value and `proc`s cannot be compared.

[breaking-change]

Closes #10898
auto merge of #14286 : cmr/rust/shard-benches, r=alexcrichton

This has no tests because it's near impossible to test -- since TestFn uses
`proc`s, they can not be cloned or tested for equality. The only way to really
test this is making sure that for a given number of shards `a`, sharding from
1 to `a` yields the complete set of tests. But `filter_tests` takes its vector
by value and `proc`s cannot be compared.

[breaking-change]

Closes #10898
auto merge of #14295 : aturon/rust/hide-init_to_vec, r=alexcrichton

The `init_to_vec` function in `collections::bitv` was exposed as an
inherent method, but appears to just be a helper function for the
`to_vec` method. This patch inlines the definition, removing
`init_to_vec` from the public API.

[breaking-change]
rustc: Better resolve errors for &T, &mut T, remove failure condition.
core::iter::order functions now take two types of iterators.

Previously the type signatures of the ordering functions in
`core::iter::order` took two iterators, but only if they were
the same type of iterator.  This commit loosens that restriction
and allows different kinds of iterators (but with the same type
of elements) to be compared.
auto merge of #14265 : Ryman/rust/issue-14254, r=alexcrichton

This is hard coding `Box` into this, as it doesn't seem to parse as `TyUniq` like `~` did. This may not be correct for all usages of the box keyword. 

Closes #14254.
auto merge of #14289 : TyOverby/rust/master, r=alexcrichton

Closes #14278.

Previously the type signatures of the ordering functions in `core::iter::order` took two iterators, but only if they were the same type of iterator.  This commit loosens that restriction and allows different kinds of iterators (but with the same type of elements) to be compared.