tree cc310814a8b0e4d5d68b43de60e0c52407990551
parent 14cc6ccf273d29d7d99af13c92e6039bc7b4726f
author Todd Wang <toddw@google.com> 1454112729 -0800
committer Todd Wang <toddw@google.com> 1454112729 -0800

gosh: Add bufferedPipe ReadFrom and WriteTo.

This is just a simple performance improvement; the exec package
and gosh use io.Copy to copy bytes between readers and writers,
and that gets a speedup if you implement ReadFrom and WriteTo
since we can avoid allocations.

Change-Id: Ib7029dd52556719cbad6b24545496a3063a55b1d