Command: Support posix_spawn() on FreeBSD/OSX/GNU Linux#48624

Merged

alexcrichton merged 19 commits intorust-lang:masterfrom

bdrewery:freebsd-posix-spawn

Mar 23, 2018

Commits on Mar 2, 2018

Commits on Mar 22, 2018

Command::env_saw_path() may be unused on platforms not using posix_spawn()
bdrewery
committed