changes that affect post checkpoint runs.

changes that affect post checkpoint runs.

cpu/exec_context.cc:
    you can't delete an element of an array that you newed.  oops.
kern/tru64/tru64_events.cc:
    changes to reflect .ini changes, and also b/c es_intr and ipintr can happen at ANY point, even within a current calling path being tracked.
sim/system.cc:
    can't delete an element of a newed array.  must new them separately.

--HG--
extra : convert_revision : 21573327b7b7f20bf9a3fcfb5854526433e17e17