Added test for link path ordering
Register snapshots.

Closes #16880.
auto merge of #17005 : bjz/rust/bit-count, r=thestinger

Fixes rust-lang/rfcs#224
auto merge of #17034 : retep998/rust/glob-fix, r=alexcrichton

Fixes #15279
Based on #13338
Fix deprecate warning "extern crate ... as ..."

Its arguments were inverted.
Relicense shootout-reverse-complement.rs to the shootout license.

Everyone agreed.  Fix #17065
auto merge of #17015 : seb-m/rust/fix-extern-crate-as, r=sfackler

Its arguments were inverted.

For instance it displayed this message:

```
warning: this extern crate syntax is deprecated. Use: extern create "foobar" as foo;
```

Instead of:

```
warning: this extern crate syntax is deprecated. Use: extern create "foo" as foobar;
```
Relicense shootout-nbody.rs to the shootout license

Everyone agreed. fix #17073
Flip arguments to `std::iter::iterate`.

Breaks `iterate(f, seed)`, use `iterate(seed, f)` instead.
The convention is to have the closure last.

Closes #17066.

[breaking-change]
enable jemalloc debugging in unoptimized builds

The performance hit from these checks is significant, but unoptimized
builds are already incredibly slow. Enabling these checks results in
better test coverage since there are bots doing unoptimized builds, and
the cost is relatively small in the context of an unoptimized build.
This also allows using `JEMALLOC_FLAGS` to override the default
configure flags.
auto merge of #16904 : inrustwetrust/rust/link-path-order, r=alexcrichton

Issue can be reproduced by the following:
```
$ cat main.rs
fn main() {}
$ rustc -Z print-link-args -Lfoo -Lbar main.rs
```
Run the rustc command a few times and observe that the order of the '-L' 'foo' '-L' 'bar' options randomly changes.

Actually hit this issue in practice on Windows when specifying two -L directories to rustc, one with rust-sdl2 in it and one with the C SDL2.dll. Since Windows file systems aren't case-sensitive, gcc randomly attempted to link against the rust sdl2.dll instead of SDL2.dll if that -L directory happened to come first.

The randomness was due to addl_lib_search_paths being a HashSet. Changed it to a Vec instead which maintains the ordering.
Unsure how to test this though since it is random by nature; suggestions very welcome.
Fix casts in constant expressions

Fixes #17074.
auto merge of #17035 : huonw/rust/moar-jquery, r=alexcrichton

Sometimes (e.g. on Rust CI) the "expand description" text of the
collapse toggle was displayed by default, when a page is first
loaded (even though the description is expanded), because some
Content-Security-Policy settings disable inline CSS.

Setting it the style with the `.css` method allows the output to be used
in more places.
Forbid unsized rvalues

Closes #16813
Allow Rust to be built with LLVM trunk (3.6).
auto merge of #16942 : alexcrichton/rust/remove-net-assert, r=brson

This assert was likely inherited from some point, but it's not quite valid as a
no-timeout read may enter this loop, but data could be stolen by any other read
after the socket is deemed readable.

I saw this fail in a recent bors run where the assertion was tripped.
rustdoc: Don't strip #-lines if notrust

Other languages may not want to have a leading #-line get stripped.
libnative/io: generic retry() for Unix 64 bit read/write().

Win32/WinSock APIs never call WSASetLastError() with WSAEINTR
unless a programmer specifically cancels the ongoing blocking call by
a deprecated WinSock1 API WSACancelBlockingCall().
So the errno check was simply removed and retry() became an id function
on Windows.
Note: Windows' equivalent of SIGINT is always handled in a separate thread:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms682541%28v=vs.85%29.aspx
"CTRL+C and CTRL+BREAK Signals"

Also, incidentally rename a type parameter and clean up some module imports.
auto merge of #16933 : nick29581/rust/dst-rvalue, r=nikomatsakis

Closes #16813 

r? @nikomatsakis I feel like I should be checking more things in check_rvalues, but not sure what - I don't properly understand expr_use_visitor
Add ICE regression test with unboxed closures

This code used to produce the following ICE:

   error: internal compiler error: get_unique_type_id_of_type() -
   unexpected type: closure,
   ty_unboxed_closure(syntax::ast::DefId{krate: 0u32, node: 66u32},
   ReScope(63u32))

This is a regression test for issue #17021.