Description of problem:
In several occasions, the script may end with return code 0 even when the
service does not start correctly. For example
if [ ! -x /sbin/arptables ]; then
        exit 0
fi

Version-Release number of selected component (if applicable):
all

How reproducible:
always

Steps to Reproduce:
1. change access rights such that /sbin/arptables is not executable
2. service arptables_jf start
3. echo $?
  
Actual results:
0

Expected results:
Non-zero exit code with respect to our guidelines.

Additional info:
When fixing this bug, please obbey our init script guidelines and be sure that
status command is run correctly.
Our guidelines are on following two pages:
http://intranet.corp.redhat.com/ic/intranet/InitscriptsSpec.html
http://intranet.corp.redhat.com/ic/intranet/InitscriptGuidelines.html

For an example of the script that returns the error codes correctly and always
runs status see:
http://devserv.devel.redhat.com/~mmarcini/amd