C++ comments cleanup


sql/stacktrace.c:
  C++ comments cleanup
sql/structs.h:
  C++ comments cleanup
sql/ha_myisam.h:
  C++ comments cleanup
include/config-os2.h:
  C++ comments cleanup
include/sslopt-case.h:
  C++ comments cleanup
mysys/mf_tempfile.c:
  C++ comments cleanup
sql/mysql_priv.h:
  C++ comments cleanup
sql/slave.h:
  C++ comments cleanup
sql/time.cc:
  C++ comments cleanup
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted