New csf v5.42 (security fix)

SECURITY FIX. Anyone running csf on a DirectAdmin server should upgrade to this release immediately:Changes:

• Add check for successful open of admin.list on DA servers to avoid a segfault, which could lead to a buffer overflow

This is in response to http://www.exploit-db.com/exploits/18225/This issue is apparent on DirectAdmin servers only where this C wrapper is used.