tree 6ed5e1c49865d71eb6bbb1d00f667d9745feed92
parent 3a0910e0b8ffb006a483b3a38777f997b978ff88
author Todd Wang <toddw@google.com> 1454105085 -0800
committer Todd Wang <toddw@google.com> 1454105085 -0800

x/lib: Add LookPath{,All} to envvar, and use it in cmdline.

This exports the LookPath and LookPathAll functionality that used
to live unexported in cmdline.  The API and semantics have been
cleaned up slightly, to make it suitable for external use, and
some tests have been added.

Change-Id: I57bdef40f62095edcff11890197bbbdacdce6cbb