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.
Do not ignore errors running llvm-config
auto merge of #11323 : sanxiyn/rust/llvm-config, r=alexcrichton

Standard error was not captured, ignoring any errors from llvm-config.
Handle EINTR throughout libnative

Closes #11214
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 #11304 : alexcrichton/rust/eintr, r=brson

Closes #11214
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.
Write up default methods for the tutorial.
Wording tweak suggested by @pcwalton.
tutorial: change `float` to `f32` since float is no longer a type.