Get rid of unused SimpleVisitor stuff.
Guarantee that statics have unique names

While they may have the same name within various scopes, this changes static
names to use path_pretty_name to append some hash information at the end of the
symbol. We're then guaranteed that each static has a unique NodeId, so this
NodeId is as the "hash" of the pretty name.

Closes #9188
c_str: Add new method .as_str() -> Option<&str>

Also rustify .as_bytes(), so it no longer calls libc::strlen() and is
inlineable.
When declaring extern fns from external crates, use the correct abi

Beforehand it was assumed that the standard cdecl abi was used for all extern
fns of extern crates, but this reads the abi of the extern fn type and declares
the function in the local crate with the appropriate type.
auto merge of #9187 : lkuper/rust/no-simplevisitor, r=catamorphism

We don't seem to be using `SimpleVisitor` anywhere in rustc.  Is there any reason to keep it around?

r? anyone
auto merge of #9196 : alexcrichton/rust/attempting-9055, r=cmr

Beforehand it was assumed that the standard cdecl abi was used for all extern
fns of extern crates, but this reads the abi of the extern fn type and declares
the function in the local crate with the appropriate type.

I was trying to think of how to write a test for this, but I was just drawing up blanks :(. Are there standard functions in libc which are not of the cdecl abi? If so we could try linking to them and make sure that the cal completes successfully.

Otherwise, I manually verified that the function was declared correctly by looking at the llvm assembly.

cc #9055 (I'm not sure if this will fix that issue)
auto merge of #9206 : alexcrichton/rust/issue-9188, r=catamorphism

While they may have the same name within various scopes, this changes static
names to use path_pretty_name to append some hash information at the end of the
symbol. We're then guaranteed that each static has a unique NodeId, so this
NodeId is as the "hash" of the pretty name.

Closes #9188
Add rustdoc_ng
Finish addition of rustdoc_ng to Makefiles.
Update rustdoc_ng to new ast naming
Update rustdoc_ng to syntax and metadata changes
rustdoc_ng: add licenses and issue numbers to appease tidy
auto merge of #8540 : cmr/rust/rustdoc_ng, r=catamorphism

This doesn't enable it by default yet, or include the frontend. But the tool
is pretty much done, and it'd be nice to stave off bitrot.

I couldn't get it to actually build with the Makefile though. I don't really
understand what is going on in that makefile at all. Could @graydon or
@pnkfelix lend a hand?
auto merge of #9220 : kballard/rust/c_str-as_str, r=thestinger

Also rustify .as_bytes(), so it no longer calls libc::strlen() and is
inlineable.
Pass OS to gyp_uv
Ignore failing tests on Android
auto merge of #9121 : sanxiyn/rust/arm, r=alexcrichton

Ignore failing tests on Android to prepare for #9120.