PROBLEM: (94801, 94896) (PATCH ID: OSF540-189)
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Corrections to fixfdmn to:
- eliminate coredumps
- avoid creating data inconsistencies
- provide better messaging
- perform better consistency checking in directories


PROBLEM: (95465) (PATCH ID: OSF540-424)
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This patch fixes a problem were after running fixfdmn the domain is still 
not mountable, because the count of mcells are incorrect in the RBMT/BMT0.
This patch also fixes a problem with fixfdmn were in a rare case it was 
incorrectly fixing mcell counts on a valid ODSv3 AdvFS domain.  In this case 
the domain is still valid, but metadata will have been changed.  The following
messages from the fixfdmn log file will appear in this case:

15:26:52 | FOUND | Found corruptions in RBMT/BMT0 log mcell.
15:26:52 | FOUND | Found corruptions in RBMT/BMT0 vol/dom mcell.
15:26:52 | FOUND | Found corruptions in RBMT/BMT0 misc mcell.
15:26:52 | FOUND | Found corruptions in RBMT/BMT0 root tag mcell.
15:26:52 | FOUND | Found corruptions in RBMT/BMT0 log mcell.
15:26:52 | FOUND | Found corruptions in RBMT/BMT0 misc mcell.

Note these same log messages can also appear if fixfdmn finds actual 
corruptions.