Add a warning message when the memory limit is set too low
Add a warning message when the memory limit is set too low

git-svn-id: 663665d626adba95639dab686df0e13ce55f2fcc@17239 28e8926c-6b08-0410-baaa-805c5e19b8d6

ow2-proactive/agent-linux,ow2-proactive/agent-linux,ow2-proactive/agent-linux