Description of problem:
Package does not check the installation status when upgrading.

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


How reproducible:
Update to a newer version

Steps to Reproduce:
1. rpm -vhU heartbeat

Additional info:

The spec file should check if it is an update or if it is an deinstallation.
When updating, "chkconfig --del" is executed unconditionally which breaks
existing systems.

Proposed Fix:

-----------------------
%preun
if [ $1 = 0 ] ; then
        service hearbeat stop
        /sbin/chkconfig --del hearbeat
fi

%postun
if [ "$1" -ge "1" ] ; then
        service heartbeat condrestart
fi
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