[ale] user limits

[Jim Kinney]

When a system uses pam, the file (typically) /etc/security/limits.conf
can control limits for things like resident set size, stack size, number
processes, login count, etc. 

What happens when a user hits a soft limit? A hard limit means the
operation is not completed and/or fails. 

I'm looking for a way to notify users that they are pushing their luck
opening another (eg - firefox) application as they are running out of
ram.

Jim Kinney