man page: small clarification
keyring: squash opening and loading into one func
style modifications because of newer astyle
keyring: better open/close behavior
actions: neatified message for failed verification
actions: better keyring opening behavior

This delays opening (and locking) the keyring until all input has been
processed, and all possible errors that would make a chance that the
keyring doesn't have to be opened have been checked for.

Whole purpose was to enable codecrypt to be chained with pipes in UNIX-y way,
like this primitive certificate creation:

(echo "At `date` I certify this is The Key:" ; ccr -pa -F "the key") | ccr -s
man: notice about the big file problem
actions: handle possible keyring saving failures
unixification: correct README and ChangeLog