prevent mess when copying BaseObject instances
prevent mess when copying BaseObject instances

Note: to understand this fix, see AbstractElement.__init__ -- it calls
deepcopy on parent.env, it caused copying of objects we do not want to
copy such as thread locks.

nojhan/weboob-devel,sputnick-dev/weboob,RouxRC/weboob,frankrousseau/weboob,Konubinix/weboob,willprice/weboob,laurent-george/weboob,willprice/weboob,nojhan/weboob-devel,frankrousseau/weboob,laurent-george/weboob,Konubinix/weboob,laurent-george/weboob,sputnick-dev/weboob,RouxRC/weboob,frankrousseau/weboob,nojhan/weboob-devel,Konubinix/weboob,sputnick-dev/weboob,willprice/weboob,RouxRC/weboob