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Except for when the user is prompted for Yes or No, all output now goes through
the logging framework

0 on success (or upgrade aborted by user)
1 on check and need update
2 on check and version of db too high
3 on command-line error
4 on db read error
5 on upgrade error

with this change, you can pass run_dbutil.sh a relative path name for the db file

1. Fix minor gremlins in unit test and main program
2. Update to rename b10-dbutil process (and so avoid an error
from the process_rename_test check).
3. With (2), add run_dbutil to run in test mode

Conflicts:
	ChangeLog

For the findPreviousNSEC3Hash.

Also, renamed the nsec_namespace_ variable to more correct
nsec3_namespace_.

This is for the newly introduced interface. It makes stuff compile, it
complained about pure virtual methods.

[1751] addition of notes, rearrangement for reading easily, and removal of unnecessary updates of the statistics_data variable

this is a simplest fix to the lettuce resolver test failure.  note: this will
make the auth server slower.  a more complete fix will be done in #1784.
okayed by muks on jabber.

otherwise it could result in duplicate free.  This basically recovers the
same behavior of d5ec40da that was lost
in commit 699068ef.

fix conflicts

removed arguments that were never used, use PATH_SEPARATOR instead of literal, add comments, fixed AXC_CHECK_PROG_NONCACHE for the case where $3 is not supplied

[1751] addition of a search and removal of dead instances, a accumulation check by a complicated statistics data structure, and miscellaneous typo fixes