Restrict access to configuration files

[CR #173689] rsmgen creates *.rsm files in the $SYBASE/admin/config directory. *.servers.rsm is created with read/write permissions for all three groups (user, group, others), and *.users.rsm is created with read permission for all three groups. This exposes logins and password information to everyone.

Workaround: Restrict access to the configuration files and the directory containing them using the chmod command, so that only the RSM Server administrator can read and write to them.