Opendnssec 546

OPENDNSSEC-546: Extra logging for key generation and allocation. Changes discussed (but not reviewed) by Sion and he is happy with this approach. This is extra debug info for a unresolved issue with key allocation. I don't think this needs review by anyone other than the Release Manager. 

OPENDNSSEC-358: Final tweaks to usage/man pages.

Prep for release.