…ting.

…r::outlives.

submodules: update clippy from 329923e to fdce47b

Changes:
````
add CR feedback
Improve documentation
Use `edition:2018` flag more widely
Update tests/ui/needless_doc_main.rs
Move links to the end of each chapter on adding_lints
Move links to the end of each chapter on CONTRIBUTING
Clean-up adding_lints.md
Clean-up CONTRIBUTING.md
needless_doc_main: only check rust code
Use `node_type_opt` over `node_type`
Fix doc
Fix ICE with trivial_bounds feature
clippy_lints: readme: don't mention crates.io since it is no longer used to publish clippy.
update rust-lang.github.io to rustc-dev-guide.rust-lang.org
Improve placeholder in map_unit_fn
Fix match single binding when in a let stmt
Improve error messages for {option,result}_map_unit_fn
Mention the setup instructions in CONTRIBUTING
redundant_pattern: take binding (ref, ref mut) into account in suggestion.
check_pat: delay creation of the "normal" vec until we reach the branch where is is actually needed
deps: bump itertools 0.8 -> 0.9
add lint on File::read_to_string and File::read_to_end
transition rustc-guide to rustc-dev-guide
Rename macro_use_import -> macro_use_imports
warn on macro_use attr
Fix deploy script for tag deploys
````

Fixes rust-lang#69957

Split librustc::{traits,infer} to their respective crates

Followup on #67953.

I tried to follow the existing module structures.

cc @eddyb
r? @Zoxc

adjust Miri to needs of changed unwinding strategy

As expected, rust-lang/rust#67502 broke unwinding in Miri. To fix it we have to adjust parts of the engine and the panic runtime, which this PR does. The Miri-side changes are in rust-lang/miri#1227.

Cc @oli-obk @Aaron1011 @Mark-Simulacrum @Amanieu

Fixes #70001

…les.

…nc-upstream-20200320