CORE-462 New option in addition to -V switch to specify a custom verbose interval
CORE-2540 Utilities need a more coherent way to show help and version
CORE-2541 Too many hardcoded messages in nbackup
CORE-2542 qli and nbackup accept arbitrary input after the first letter of an option
CORE-2543 nbackup may hide the real cause of failure
CORE-2545 Lack of several validations in gbak
CORE-2547 Utilities need to honor their minimum number of characters to recognize an option
CORE-2565 Many hardcoded messages in Trace Manager
Moving functions that don't depend on preprocessing to iutils.cpp in isql is the only alien change here.
Now all utilities react to -z for version and -? for help (qli was left for another time)
CORE-2541: Too many hardcoded messages in nbackup (done partially)
