factotum: Strip carriage returns when reading text files.
factotum: Strip carriage returns when reading text files.

This is the first of presumably many CLs to make upspin
run on Windows.

Change-Id: Iae18a8939a12048352f1c410d3289cfc0223a4b6
Reviewed-on: https://upspin-review.googlesource.com/4700
Reviewed-by: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@google.com>

upspin/upspin,upspin/upspin