Use Popen .communicate() instead of .stdin.write() to avoid deadlocks.
Review Request #5393 — Created Feb. 3, 2014 and submitted
Use Popen .communicate() instead of .stdin.write() to avoid deadlocks.
Writing to Popen.stdin can cause a deadlock if the passed-in data is larger
than the OS's buffer. The communicate() method avoids this problem, and it
makes the code a bit shorter, too.
- Ran unit tests.
- Smoke tested a few diffs.
