[Midnightbsd-cvs] src: cron/cron: Add -m option to cron(8), which overrides default mail

[laffer1 at midnightbsd.org]

Log Message:
-----------
Add -m option to cron(8), which overrides default mail recipient for cron mails unless it's explicitly provided by MAILTO= in crontab.  Setting the recipient to null string disables default mails.  Also remove __P instances. Obtained from: FreeBSD 9-CURRENT

Modified Files:
--------------
    src/usr.sbin/cron/cron:
        Makefile (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/cron/cron/Makefile?r1=1.3&r2=1.4)
        cron.8 (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/cron/cron/cron.8?r1=1.2&r2=1.3)
        cron.c (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/cron/cron/cron.c?r1=1.2&r2=1.3)
        cron.h (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/cron/cron/cron.h?r1=1.2&r2=1.3)
        database.c (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/cron/cron/database.c?r1=1.2&r2=1.3)
        do_command.c (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/cron/cron/do_command.c?r1=1.2&r2=1.3)
        externs.h (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/cron/cron/externs.h?r1=1.2&r2=1.3)
        user.c (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/usr.sbin/cron/cron/user.c?r1=1.2&r2=1.3)