Please review: [389 Project] #451: Allow db2ldif to be quiet

[Noriko Hosoi]

https://fedorahosted.org/389/ticket/451

https://fedorahosted.org/389/attachment/ticket/451/0001-Trac-Ticket-451-A...

Description: Export utility db2ldif and import utility ldif2db are
always verbose. This patch is adding an option '-q' to suppress
the outputs.

This patch modifies db2bak and bak2db which already supports '-q',
as well. The scripts used to interpret '-q'. If it was not set,
a verbose debug option '-d 524288' was passed to ns-slapd. Instead,
this patch directly passes '-q' to ns-slapd and let it handle it
in the C code.