- Made naming schemes consistent between Option, Result and Either
- Changed Options Add implementation to work like the maybe monad (return None if any of the inputs is None)
- Removed duplicate Option::get and renamed all related functions to use the term `unwrap` instead

Closes #5506.

It was previously pushing the byte on top of the string's null
terminator. I added a test to make sure it doesn't break in the future.

It seems that relatively new code uses `Foo::new()` instead of `Foo()` so I wrote a patch to migrate some structs to the former style.
Is it a right direction? If there are any guidelines not to use new()-style, could you add them to the [style guide](https://github.com/omasanori/rust/wiki/Note-style-guide)?

Useful for SDL and possibly Android too.

r? @brson

Signed-off-by: NOGINO Masanori <masanori.ogino@gmail.com>

The truncation needs to be done in the console logger in order
to catch all the logging output, and because truncation only matters
when outputting to the console.

Update the arm linux support some more. We had a previous patch for the RasberryPi. This adds a new target `arm-unknown-linux-gnueabi` for more general arm linux support.

Build/Host machine: x86_64 Debian testing (jessie) with the `gcc-4.4-arm-linux-gnueabi` package

Tested on targets:

- TS-7800 Feroceon (ARMv5TEJ) running Debian 7.0 wheezy
- Beaglebone black (ARMv7) running Angstrom GNU/Linux v2012.12
   - rustc flags:  `--target=arm-unknown-linux-gnueabi --linker=arm-linux-gnueabi-gcc`

- Samsung Galaxy S II (to make sure android still works)
   - rustc flags:  `--target=arm-linux-androideabi --android-cross-path=[path to standalone toolchain]`

Since not all arm devices (i.e. afaik anything older than armv6 like the ts-7800 i tested on) supported getting the tls address via the `mrc` instruction, I made it also try via the magic address the kernel maps into the address space (0xFFFF0FF0). One or the other should work (and on android it seems like both work).

Also fixes a bug where rustc would always try to invoke the android assembler for any kind of arm target.

The compiler-generated dtor for DList recurses deeply to drop Nodes.
For big lists this can overflow the stack.

This is a problem for the new scheduler, where split stacks are not implemented.

Thanks @blake2-ppc

The compiler-generated dtor for DList recurses deeply to drop Nodes.
For big lists this can overflow the stack.

These are both obsoleted by the forthcoming new GC.

Closes #5506.

Not compatible with newsched

This is no longer testable once newsched is turned on

Every time run_sched_once performs a 'scheduling action' it needs to guarantee
that it runs at least one more time, so enqueue another run_sched_once callback.
The primary reason it needs to do this is because not all async callbacks
are guaranteed to run, it's only guaranteed that *a* callback will run after
enqueing one - some may get dropped.

At the moment this means we wastefully create lots of callbacks to ensure that
there will *definitely* be a callback queued up to continue running the scheduler.
The logic really needs to be tightened up here.

rustc needs *even more* megabytes when run without optimizations

Otherwise interferes with the existing runtime

Also fix some incorrect comments and variable names.

WIth this patch `RUSTFLAGS='--cfg unicode' make check"` passed successfully.

* Why doesn't `#[link_name="icuuc"]` make libextra to link against libicuuc.so?
* In `extra::unicode::tests`, `use unicode; unicode::is_foo('a')` failed but `use unicode::*; is_foo('a')` succeeded. Is it right?

It was previously pushing the byte on top of the string's null
terminator. I added a test to make sure it doesn't break in the future.

This is a reopening of #6713

This is still blocked on windows failures. I'll re-push try once the existing crisis has passed.

etc: add the `in` keyword to the emacs mode.

Thanks @luqama!

At the same time create a more robust wrapper to try to prevent this type of
issue from cropping up in the future.

* LLVM now has a C interface to LLVMBuildAtomicRMW
* The exception handling support for the JIT seems to have been dropped
* Various interfaces have been added or headers have changed

rvalues aren't going to be used anywhere but as the argument, so
there's no point in copying them. LLVM used to eliminate the copy
later, but why bother emitting it in the first place?

multicast functions now take IpAddr (without port), because they dont't
need port.

Uv* types renamed:
* UvIpAddr -> UvSocketAddr
* UvIpv4 -> UvIpv4SocketAddr
* UvIpv6 -> UvIpv6SocketAddr

"Socket address" is a common name for (ip-address, port) pair (e.g. in
sockaddr_in struct).

P. S. Are there any backward compatibility concerns? What is std::rt module, is it a part of public API?