PROBLEM: (UTO97639A) (PATCH ID: OSF510-017)
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This patch prevents warning messages of 'not currently mounted'
from displaying for filesystems you did not request to umount.  An
example follows:
# umount -a -t nfs
/test5: not currently mounted  <==== These are AdVFS filesystems
/test2: not currently mounted
/test1: not currently mounted