Added skeleton implementation of a B-tree with a few bells and
whistles.  No major functionality added yet (such as insertion and
removal).
Re-arranging some things in btree.rs to accommodate testing.
Addressed style concerns in btree.rs and added it to the lib file.
Added documentation within btree.rs.
Edited comment for docs to show std::io is deleted and replaced by std::rt::io
std: Make atomic types non-copyable. Closes #8380
Define WSAPOLLFD only on mingw 4.x

Fixes #10327
fix android timegm
auto merge of #10341 : willingc/rust/minor-docfix, r=huonw

...rt::io
Added proper //! documentation to the beginning of btree.rs.
auto merge of #10303 : niftynif/rust/master, r=catamorphism

r? @catamorphism
First contribution; contains struct definitions and some useful traits.  Can possibly be improved by removing the dependence on the Clone trait.  This is intended to be the beginning of a long-term project.
tutorial: rewrite the section vectors/strings

This section desperately needs to be expanded, but removing the
misleading/incorrect information is a priority.

Managed vectors/strings are not covered, as they are feature-gated and
are only a micro-optimization to avoid double-indirection.

Closes #6882
auto merge of #10344 : brson/rust/atomiccopy, r=alexcrichton

I didn't try to add clone methods since it's not clear to me which types are appropriate to clone or what the memory ordering should be.
auto merge of #10346 : klutzy/rust/mingw64-32-fix, r=alexcrichton

Fixes #10327
auto merge of #10348 : ksh8281/rust/fix_android_timegm, r=yichoi

fix timegm bug on android
TZ restore not correctly before.
and it cause test case fail (time::tests::run_tests::test_convertions)

with @sammykim
auto merge of #10354 : thestinger/rust/vector, r=huonw

This section desperately needs to be expanded, but removing the
misleading/incorrect information is a priority.

Managed vectors/strings are not covered, as they are feature-gated and
are only a micro-optimization to avoid double-indirection.

Closes #6882