new comments.


myisam/mi_open.c:
  fix for r-tree code (memory overlap reported by valgrind)
myisam/myisamdef.h:
  fix for r-tree code (memory overlap reported by valgrind)
myisam/rt_index.c:
  fix for r-tree code (memory overlap reported by valgrind)
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted