Adding test for issue #15917 which was previously fixed with #15709
libcore: Fix documentation comment for f32.
don't translate items when monomorphizing foreign-ABI functions
Make small doc contributions less onerous/intimidating
mk: Don't emit landing pads in stage 0.

Reduces time to build stage0 from 11:30 to 9:40 on my machine.
librustc: Don't use the same alloca for match binding which we reassign to in arm body.
librustc: Also use new alloca if matching on an arg or upvar which we reassign in the arm body.
librustc: Encode upvar_borrow_map in metadata.
auto merge of #16350 : hirschenberger/rust/issue-15917, r=alexcrichton

Adding test for issue #15917 which was previously fixed with #15709
removing 'str'='struct' search synonym

fixes #16384
rustdoc: use raw search in URL

fixes #16385
fixes #16271
auto merge of #16356 : ruud-v-a/rust/fix-f32-doc, r=steveklabnik

On a side note (but maybe this is not the right place to ask), the name `Float::two_pi` is inconsistent with `f32::consts::PI_2`.
auto merge of #16359 : epdtry/rust/mono-item-dedup-foreign, r=alexcrichton

Extend the changes from #16059 to the new generic foreign functions introduced by #15831.
auto merge of #16371 : Gankro/rust/friendly-contrib, r=brson

Had someone experience deep existential dread over building all of Rust on Windows just to do some minor fixes to the docs. This seems entirely unnecessary between reviewers + Bors for most purely english changes.
Fix misspelled comments for tests.
Fix typo
auto merge of #16373 : brson/rust/nopads, r=pcwalton

Reduces time to build stage0 from 11:30 to 9:40 on my machine.

There's a tradeoff here since doing this will make the stage1 compile-fail tests fail.

r? @pcwalton
auto merge of #16387 : Gankro/rust/doc-search, r=cmr

Fixes str/struct ambiguity (by removing the synonym) and pushes raw searches to the history instead of processed ones. 

# [Live Version Here](http://cg.scs.carleton.ca/~abeinges/doc/std/)
Fix typo `convering` to `converting`
auto merge of #16395 : superlogical/rust/patch-1, r=alexcrichton