LOGCXX-14: fix 'std::exception' should be explicitly initialized in the  copy constructor
LOGCXX-14: fix 'std::exception' should be explicitly initialized in the 
copy constructor

git-svn-id: a7c1976543b50a5b791fd6a475a0ba067ae951b4@494563 13f79535-47bb-0310-9956-ffa450edef68

mir-ror/log4cxx,mir-ror/log4cxx,mir-ror/log4cxx,mir-ror/log4cxx