doc: switch pandoc to html5
doc/rust.HTML: proper version box
doc: tidy and cleanup CSS deps, add tutorial PDF generation
doc: expand tutorial/manual CSS

Cleanup, edit, add some Bootstrap v3.0.0 elements.
rustdoc: nitpicks & cleanup
doc: fix links to comply with the new rustdoc

Closes #9911.
std: Move sys::log_str to repr::repr_to_str. Further work on #2240.
auto merge of #9937 : brson/rust/log_str, r=alexcrichton
auto merge of #9960 : adridu59/rust/patch-doc-limited, r=alexcrichton

This is #9868 but doesn't move css files to a separate subfolder, which was causing errors on the Rust buildbot.

@alexcrichton
Implement io::net::unix
Finish implementing io::net::addrinfo

This fills in the `hints` structure and exposes libuv's full functionality for
doing dns lookups.
Address a few XXX comments throughout the runtime

* Implement Seek for Option<Seek>
* Remove outdated comment for io::process
* De-pub a component which didn't need to be pub
Remove unbound pipes from io::pipe

This isn't necessary for creating processes (or at least not right now), and
it inherently attempts to expose implementation details.
Move rt::io::stdio from FileStream to a TTY

We get a little more functionality from libuv for these kinds of streams (things
like terminal dimentions), and it also appears to more gracefully handle the
stream being a window. Beforehand, if you used stdio and hit CTRL+d on a
process, libuv would continually return 0-length successful reads instead of
interpreting that the stream was closed.

I was hoping to be able to write tests for this, but currently the testing
infrastructure doesn't allow tests with a stdin and a stdout, but this has been
manually tested! (not that it means much)
Migrate Rtio objects to true trait objects

This moves as many as I could over to ~Trait instead of ~Typedef. The only
remaining one is the IoFactoryObject which should be coming soon...
Remove rt::io::support

This removes the PathLike trait associated with this "support module". This is
yet another "container of bytes" trait, so I didn't want to duplicate what
already exists throughout libstd. In actuality, we're going to pass of C strings
to the libuv APIs, so instead the arguments are now bound with the 'ToCStr'
trait instead.

Additionally, a layer of complexity was removed by immediately converting these
type-generic parameters into CStrings to get handed off to libuv apis.
Remove IoFactoryObject for ~IoFactory

This involved changing a fair amount of code, rooted in how we access the local
IoFactory instance. I added a helper method to the rtio module to access the
optional local IoFactory. This is different than before in which it was assumed
that a local IoFactory was *always* present. Now, a separate io_error is raised
when an IoFactory is not present, yet I/O is requested.
Don't attempt to export uv functions directly
Migrate the last typedefs to ~Trait in rtio

There are no longer any remnants of typedefs, and everything is now built on
true trait objects.
Move as much I/O as possible off of native::io

When uv's TTY I/O is used for the stdio streams, the file descriptors are put
into a non-blocking mode. This means that other concurrent writes to the same
stream can fail with EAGAIN or EWOULDBLOCK. By all I/O to event-loop I/O, we
avoid this error.

There is one location which cannot move, which is the runtime's dumb_println
function. This was implemented to handle the EAGAIN and EWOULDBLOCK errors and
simply retry again and again.