1.0.46.38: tad more information PACKAGE-LOCK-VIOLATION conditions

1.0.46.38: tad more information PACKAGE-LOCK-VIOLATION conditions

 * Add the current *PACKAGE* when the error is signaled to the
   condition.

 * Now that SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL,
   PACKAGE-LOCK-VIOLATION can inherit from SIMPLE-CONDITION instead of
   definining its own FORMAT-CONTROL and FORMAT-ARGUMENTS slots.