be more careful about closing framewworks as part of
orte_finalize. Owing to recent restructuring in opal to handle
finalize in a more general fashion, the missing framework
closes were causing meltdowns as the mca vars subsystem
was cleaning itself up.
This problem was recently reported by Siegmar:
https://www.mail-archive.com/users@lists.open-mpi.org//msg32946.html
Signed-off-by: Howard Pritchard <howardp@lanl.gov>
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