Add .insert() and .insert_char() methods to ~str.
extra: Remove condition from semver
Command is now an enum
Move syslog to BuildContext
Move command line parsing to parse_args.rs
Make rustc's own lib directory configurable and change the default to rustlib. Fixes #3319
Fix some of the testcases
simple-lib and deeply and c-dependencies still have problems.
But they were nt caused by this pull request
extra::treemap: add mutable-value iterators.
extra::treemap: remove mutate_values, replaced by .mut_iter().
extra::treemap: share code between the mutable and immutable iterators.

Yay for macros.
Don't abort the process in native::start

If the main closure failed, then the `exit_code` variable would still be `None`,
and the `unwrap()` was failing (triggering a process abort). This changes the
`unwrap()` to an `unwrap_or()` in order to prevent process abort and detect when
the native task failed.
auto merge of #11313 : alexcrichton/rust/fix-native-failure, r=pcwalton
Revert "std: adjust requested stack size for thread-local storage."

This reverts commit f1b5f59287106fc511d29c425255bd343608065c.

Using a private function of a library is a bad idea: several people (on
Linux) were meeting with linking errors because of it (different/older
versions of glibc).
auto merge of #11331 : huonw/rust/revert-stack-size, r=luqmana

This reverts commit f1b5f59287106fc511d29c425255bd343608065c.

Using a private function of a library is a bad idea: several people (on
Linux) were meeting with linking errors because of it (different/older
versions of glibc).
Use ~-objects instead of @-objects for syntax exts

This is necessary for #11151 to make sure dtors run before the libraries
are unloaded.
Remove a fixme

I don't think it's relevant, a warning is more appropriate. Easier to just
maintain the order.

Closes #4681
Add tidy support for snapshots

This let's us specify exactly which snapshot a given note to update after
snapshot is for.

Closes #2483
Remove a fixme

pcwalton says this is right, and it looks right to me too.

Closes #4731
tidy: spew less chaff
std: mark some modules as unstable

Obviously everything is unstable, but these particularly so, and they will
likely remain that way.

Closes #10239