- remove ioctl_list (2) reference from ioctl.2 man page [bnc#900141]

- update to 3.74:
- new and rewritten pages
* pldd.1, cp1252.7
- newly documented interfaces in existing pages
* mq_overview.7: /proc/sys/fs/mqueue/msgsize_default
/proc/sys/fs/mqueue/msg_default

- update to 3.73:
- new and rewritten pages
* namespaces.7, pid_namespaces.7, user_namespaces.7
- newly documented interfaces in existing pages
* clone.2: Document CLONE_NEWUSER for creating a new user namespace
* setns.2: Document the PID, user, and mount namespace support
* unshare.2: Document CLONE_NEWPID, CLONE_NEWUSER, CLONE_THREAD,
CLONE_SIGHAND, and CLONE_VM
- see Changes for details

- update to 3.72:
- new and rewritten pages:
* memusage.1, memusagestat.1, mtrace.1
see Changes for details

- man-pages 3.71:
- new and rewritten pages:
* group_member.3
* isfdtype.3
- see Changes for details