Fix warnings for constant names
Pass features along to rustdoc
auto merge of #676 : jdeseno/cargo/warnings, r=alexcrichton
Use the right package for doc test variables
auto merge of #679 : alexcrichton/cargo/fix-doc-test, r=brson
auto merge of #677 : sfackler/cargo/rustdoc-features, r=alexcrichton

Note that they won't actually work until rust-lang/rust#17834 lands.
update from upstream
add option --target-name to cargo run command
add option description, revert back any changes
revert back Cargo.lock