Add shutdown options (so far only SIGKILL), so that there won't be any strace mysqld threads


ndb/src/cw/cpcd/APIService.cpp:
  Add shutdown options
   (so far only SIGKILL)
ndb/src/cw/cpcd/CPCD.hpp:
  Add shutdown options
   (so far only SIGKILL)
ndb/src/cw/cpcd/Process.cpp:
  Add shutdown options
   (so far only SIGKILL)
ndb/test/include/CpcClient.hpp:
  Add shutdown options
   (so far only SIGKILL)
ndb/test/run-test/main.cpp:
  Add shutdown options
   (so far only SIGKILL)
ndb/test/src/CpcClient.cpp:
  Add shutdown options
   (so far only SIGKILL)