doc: Update windows status on FAQ
rustc: make comments on CrateContext doc comments
std: fix Cell's Show instance.

Previously it was printing the address of the Unsafe contained in the
Cell (i.e. the address of the Cell itself). This is clearly useless, and
was presumably a mistake due to writing `*&` instead of `&*`.

However, this later expression is likely also incorrect, since it takes
a reference into a Cell while other user code is executing (i.e. the
Show instance for the contained type), hence the contents should just be
copied out.
back: abi: remove dead code
back: archive: remove dead code
back: link: remove dead code
lib: llvm: remove dead code
metadata: common: remove dead code
metadata: csearch: remove dead code
metadata: cstore: remove dead code
make Cmplx fields public
Vec::reserve_exact should not shrink

reserve_exact should not shrink according to documentation.
Reimplement Vec::push_all* with .extend

It is shorter and also fixes missed reserve call.
Minor adjustments to the 0.10 release notes.

Mention another lint, fix a typo, and rearrange some things.
auto merge of #13241 : stepancheg/rust/push-all, r=alexcrichton

* push_all* operations should reserve capacity before pushing data to avoid unnecessary reallocations
* reserve_exact should never shrink, as specified in documentation
auto merge of #13235 : klutzy/rust/doc-faq-win, r=alexcrichton
auto merge of #13242 : huonw/rust/release-note-edits, r=alexcrichton

Minor adjustments to the 0.10 release notes.

Mention another lint, fix a typo, and rearrange some things.
auto merge of #13243 : huonw/rust/cellshow, r=thestinger

std: fix Cell's Show instance.

Previously it was printing the address of the Unsafe contained in the
Cell (i.e. the address of the Cell itself). This is clearly useless, and
was presumably a mistake due to writing `*&` instead of `&*`.

However, this later expression is likely also incorrect, since it takes
a reference into a Cell while other user code is executing (i.e. the
Show instance for the contained type), hence the contents should just be
copied out.
rand: remove (almost) all ~[]'s from Vec.

There are a few instances of them in tests which are using functions
from std etc. that still are using ~[].
rand: replace Rng.shuffle's functionality with .shuffle_mut.

Deprecates the `shuffle_mut` name in favour of `shuffle` too.

In future there will be many different types of owned
vectors/vector-likes (e.g. DST's ~[], Vec, SmallVec, Rope, ...), and so
privileging just `Vec` with the "functional" `shuffle` method is silly.