This commit fills out the functionality of `--lib`, `--test`, `--bin`,
`--bench`, and `--example` for the `cargo {test,build,bench}` commands all at
once. The support for all of this was introduced long ago, and the flags just
weren't exposed at the time.
This has been broken for quite awhile now on 32-bit linux due to what looks like
libcurl going awry. This can be reactivated later, but consistently green travis
builds are more important right now.
Additionally, we already have coverage on the buildbots for 32-bit flavors of
architectures.
* All markdown files are now rendered with `rustdoc` into HTML
* A JS syntax highlighter, prism, is included for TOML syntax highlighting.
* A new makefile target, `make doc`, will build docs into `target/doc`
* The installation script was modified to recognize when its running on windows,
as well as tweaking how it downloads and installs snapshots. The goal here was
to make the script runnable on buildbot for mac/linux/windows with 32/64 bit
options on mac/linux.
* The installation script now install rustc to `rustc/bin` in the local
directory to have parallel builds on buildbot.
* The tests now store all their temporary state locally in the build directory
to enable parallel builds on buildbot.
* A shell test is ignored which assumed the presence of a TTY output.
