revert no-longer-required workaround for mystery bug, close #3396
Warnings for missing documentations.
Only trigger missing documentation warnings to public functions and fields.
show options for -W help and -W
Issue #6419: Better clang version detection for Apple Clang

Apple Clang uses different version numbering than "regular" clang, but
it also provides the "regular" version it's based on. Update the sed
pattern to pull out this "regular" version number instead of the Apple
version number.
Make AtomicPtr use *mut, instead of ~
Add AtomicOption type
Add some documentation
core: Fail with a better error message when list_dir gets an empty path

(Yes, this did happen in real life...)
testsuite: Add a test for listing the root directory...

...and don't treat Path("/") like Path("").
auto merge of #6687 : catamorphism/rust/list_dir_empty, r=catamorphism

r? @brson (Yes, this did happen in real life...)
Mark &mut parameters as noalias
rustdoc: properly nest markup within enum variant lists (fixes #6605)

This indents all but the first line of multi-line annotations for
individual enum variants with four spaces so that pandoc will
recognize everything as belonging to the same list item.

Since that introduces `<p>` tags for some list items, I've gone ahead
and inserted blank lines after each list item so that consistently
get `<p>` tags for all `<li>`s documenting variants. It's a bit less
compact now but still tolerable, I think.
auto merge of #6742 : Aatch/rust/mut-noalias, r=thestinger

This marks `&mut` function arguments with the `noalias` attribute. Since the borrow checker enforces this property, this is worth doing.

I'm not sure if the place I'm doing it in is ideal, but it generates the correct code.

Closes #6350
make the memcpy/memmove intrinsics higher-level

This allows them to make use of the type's alignment, instead of being
pessimistic and assuming it is only 1.
C++0x -> C++11
add memset32/memset64
use uninit for cast::transmute_copy
add an align parameter to call_memcpy
make transmute_copy use memcpy, and inline it