get_connections: raises RuntimeWarning instead of crashing when lsof prints a warning to stderr. This usually happen when lsof is run for the first time and complains about missing cache file in user home.
get_connections: raises RuntimeWarning instead of crashing when lsof prints a warning to stderr. This usually happen when lsof is run for the first time and complains about missing cache file in user home.




git-svn-id: 9f18dd852162ff6c59c5533c0914e9cf81af9e7c@647 d8a29897-7e4b-0410-a74a-8bb4c295346f

elventear/psutil,elventear/psutil