ignore socket warning to stderr

[wwwutz]

Maybe cmirror should just ignore the warning not to be able to mirror a socket.
I don't see any technical purpose on mentioning it.

mxmirror FAILED CMD: /usr/bin/cmirror --nice --quiet --force_status --identity_file /root/.ssh/pmirror-key --safety --delete --lock botanophobie-moustiques /jbod/X4068 moustiques:/jbod/M8083/mirror/X4068 
/usr/bin/cmirror --nice --quiet --force_status --identity_file /root/.ssh/pmirror-key --safety --delete --lock botanophobie-lyssa /jbod/X4051 lyssa:/jbod/M8082/mirror/X4051 
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.11572: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.1159: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.1172: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.1195: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.21806: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.6080: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.767: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.841: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.858: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.862: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.874: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.879: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.886: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.896: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.898: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.905: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.916: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/databrowse/2015-09-13/logs/cgisock.953: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1035.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1039.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1040.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1041.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1043.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1045.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1054.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1055.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1057.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1069.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1080.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1081.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1087.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1091.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1093.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1095.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1135.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1355.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1382.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.1419.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.28217.2.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.40571.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.858.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/logs/wsgi.953.0.1.sock: is a socket(ignored)
lyssa.molgen.mpg.de: ./project/spw/tmp/mysql.sock: is a socket(ignored)
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