Rollup of 4 pull requests - #41445

Merged

bors merged 10 commits into

rust-lang:masterfrom

frewsxcv:rollup

Apr 21, 2017

Commits on Apr 18, 2017

Use an (over-writable) environment variable for the `gdb` command
nbigaouette
committed
82ed783

Commits on Apr 20, 2017

Rename environment variable `GDB_CMD` to `RUST_GDB` to prevent ambiguity
nbigaouette
committed
61b7ebe
Update libc to include x86_64-linux-android support
malbarbo
committed
416d6b7
Expanded docs and examples for PathBuf::file_name and friends
mbrubeck
committed
3b4d34d
Add x86_64-linux-android target
malbarbo
committed
51cc0e3
Bump the rls submodule revision
Jonathan Turner
committed
865f5d0