Improved the search by including a levenshtein distance calculation which enables the docs search function to be more forgiving for spelling mistakes
Updated the licensing information for the Levenshtein distance function
Change Shl<T, T> for Int to Shl<uint, T>
Relicense shootout-threadring.rs

Everyone agreed.

Related to #14248, close #15328
sync: Fail with init semaphore count < 0

Semaphores are not currently designed to handle this case correctly, leading to
very strange behavior. Semaphores as written are intended to count *resources*
and it's not possible to have a negative number of resources.

This alters the behavior and documentation to note that the task will be failed
if the initial count is 0.

Closes #15758
Highlight $(…)* and $foo in Vim.
Fix :syn-include usage of Vim filetype.

Here’s what the Vim manual says in *:syn-include*:

    :sy[ntax] include [@{grouplist-name}] {file-name}

	All syntax items declared in the included file will have the
	"contained" flag added.  In addition, if a group list is
	specified, all top-level syntax items in the included file will
	be added to that list.

We had two rules for `rustModPath`, one `contained` and the other not.
The effect was that the second (now renamed to `rustModPathInUse`) was
being included in the group list, and thus that all identifiers were
being highlighted as `Include`, which is definitely not what we wanted.
Remove runtime failure from pattern matching

It's an artifact of the old refutable version of `match`
and is no longer necessary.
auto merge of #15450 : chris-morgan/rust/vim-misc-2014-07-04, r=kballard
Guide: improve error handling
Guessing game explanation

We now build the game at the end of the first section.

I wanted to do it as we went along, but it's too hard with these fundamentals
not in place. The rest will do the 'as we go' approach, but I think this is
better.
repair macro docs

In f1ad425199b0d89dab275a8c8f6f29a73d316f70, I changed the handling
of macros, to prevent macro invocations from occurring in fully expanded
source. Instead, I added a side table. It contained only the
spans of the macros, because this was the only information required
in order to make macro export work.

However, librustdoc was also affected by this change, since it
extracts macro information in a similar way. As a result of the earlier
change, exported macros were no longer documented.

In order to repair this, I've adjusted the side table to contain whole
items, rather than just the spans.
rustc: Print a smaller hash on -v

The long hash just takes up space and you can discover the main hash through the
`rustc --version verbose` command.
rlibc: fix bug in `memcmp()`
rlibc: add unit tests
rustc: Make `monitor` public.

It's harder to run rustc correctly without it.
rustc: Extract --crate-type parsing to its own function

Helpful for users of rustc as a library.
rustc: Pass optional additional plugins to compile_input

This provides a way for clients of the rustc library to add
their own features to the pipeline.
rustc: Allow the crate linked to as 'std' to be customized

This adds the alt_std_name field to the Session's Options type.
I'm using this in an external tool to control which libraries
a crate links to.
Address review feedback