Fix roundup-server logging for Python 3. Using the roundup-server support for redirecting output to a log file fails with Python 3: sys.stdout = sys.stderr = open(self["LOGFILE"], 'a', 0) ValueError: can't have unbuffered text I/O Thus, this patch switches that redirection to use line-buffered output (1 as third argument to open), which works with both Python 2 and Python 3.

#!/usr/bin/env python

# Roundup requires Python 2.7+ as mentioned in doc\installation.txt
from __future__ import print_function
VERSION_NEEDED = (2,7)

import sys
if sys.version_info < VERSION_NEEDED:
    print("Content-Type: text/plain\n")
    print("Roundup requires Python %s.%s or newer." % VERSION_NEEDED)
    sys.exit(0)