WIP #561: restore stdstreams in printcore, don't butcher loggers

And move setup_logging to the main printcore app file. This way we don't
need to butcher loggers anymore

printcore.py

@@ -20,9 +20,11 @@ import getopt
 import sys
 
 from printrun.printcore import printcore
+from printrun.utils import setup_logging
 from printrun import gcoder
 
 if __name__ == '__main__':
+    setup_logging(sys.stderr)
     baud = 115200
     loud = False
     statusreport = False

printrun/printcore.py

@@ -25,7 +25,9 @@ import time
 import platform
 import os
 import sys
+stdin, stdout, stderr = sys.stdin, sys.stdout, sys.stderr
 reload(sys).setdefaultencoding('utf8')
+sys.stdin, sys.stdout, sys.stderr = stdin, stdout, stderr
 import logging
 import traceback
 import errno
@@ -34,11 +36,9 @@ import re
 from functools import wraps
 from collections import deque
 from printrun import gcoder
-from .utils import install_locale, decode_utf8, setup_logging
+from .utils import install_locale, decode_utf8
 install_locale('pronterface')
 
-setup_logging(sys.stderr)
-
 def locked(f):
     @wraps(f)
     def inner(*args, **kw):

printrun/utils.py

@@ -51,7 +51,6 @@ def setup_logging(out, filepath = None):
     logger = logging.getLogger()
     logger.setLevel(logging.INFO)
     formatter = LogFormatter("[%(levelname)s] %(message)s", "%(message)s")
-    logger.handlers = []
     logging_handler = logging.StreamHandler(out)
     logging_handler.setFormatter(formatter)
     logger.addHandler(logging_handler)