* In the calendar code, changed all "struct tm *" to "struct tm" and changed

* In the calendar code, changed all "struct tm *" to "struct tm" and changed
  all "tm = localtime(foo)" to "memcpy(&tm, localtime(foo), sizeof(struct tm))"
  Because the libc-allocated buffer was getting clobbered.
* This fixes the problem fleeb reported with Feb 1 events making it go nuts.