Check_MK Werk 3646: Fixed Livestatus output formats

ID: 3646 Title: Fixed Livestatus output formats Component: Livestatus Level: 2 Class: Bug Fix Version: 1.4.0i1 All Livestatus output formats handle special characters correctly now, including non-ASCII characters, quotes, and backslashes. There is one exception: To avoid compatibility problems, the default <tt>csv</tt> format has been left unchanged and is still broken. A new format <tt>CSV</tt> (note the uppercase) has been added which is fully functional and therefore ignores the <tt>Separators:</tt> header/hack. Furthermore, a new <tt>python3</tt> format has been added to handle the changed default string type in Python 3, where bytestrings and Unicode strings have basically swapped their roles.