title: stdout.readlines() returns UnicodeDecodeError
body: <p>I'm connection to a machine using paramiko and extracting its syslog.
  When I'm trying to use the function readlines(), I am getting UnicodeDecodeError.</p>
  
  <p>This is the program:</p>
  
  <pre><code>print_all_lines="awk 'FNR&gt;=%s &amp;&amp; FNR &lt;=%s' /var/log/syslog" %(line_number_start, line_number_end)
  stdin, stdout, stderr = SSH.exec_command(print_all_lines)
  stdout.readlines()
  </code></pre>
  
  <p>and this is the error:</p>
  
  <pre><code>UnicodeDecodeError: 'utf8' codec can't decode byte 0xc5 in position 199: invalid continuation byte
  </code></pre>