NMU: fixed build with new selinux.

NMU: added URL

crond.service: fixed race condition that affected user crontabs

Fixed uninitialized pointer bug in case when SELinux is not enabled

Added SELinux support (by Mikhail Efremov).
crond: added systemd support (by Alexey Shabalin; closes: #25463).
crond: changed default $PATH to something reasonable (closes: #25846).

/etc/pam.d/crond: Changed to use common-login.

Added pam_loginuid.so to the head of PAM session stack.

Added config file for limited(8).

crontab: Skip the top few comments in "list" mode,

Corrected License tag.

Hardened /etc/cron.d access permissions to 0700.
Hardened /etc/pam.d/crond access permissions to 0600.
Hardened system crontab files access permissions check to
Hardened spool crontab files access permissions check to
Restricted link count check to spool crontab files.

Updated to OpenBSD CVS snapshot dated 2006/04/26.
Changed crontab to use $TMPDIR for creating temporary file.

Fixed build with --as-needed.

Rebuilt for new style PAM dependencies generated by rpm-build-4.0.4-alt55.

Applied few corrections to owl-alt-linux and owl-crond patches,
Fixed children handling in crond.
Enabled setproctitle.

Updated to OpenBSD snapshot 200409162011, based on ISC Cron V4.1.
Updated patches.