[SA-14:25] Fix kernel stack disclosure in setlogin(2) / getlogin(2).
[SA-14:26] Fix remote command execution in ftp(1).
[EN-14:12] Fix NFSv4 and ZFS cache consistency issue.

Approved by:	so (des)
Merge remote-tracking branch 'freebsd/releng/9.3' into masters/releng/9.3