Set this module active=true by default

[addison74]

This module has been disabled in Magento and OpenMage. It has recently been detached from OpenMage and it can be installed manually or with Composer. Whoever installs it must manually change the /app/etc/Modules/Mage_Backup.xml file and replace bellow false with true.

<config>
    <modules>
        <Mage_Backup>
            <active>false</active>
            <codePool>core</codePool>
            <depends>
                <Mage_Core/>
            </depends>
        </Mage_Backup>
    </modules>
</config>

My opinion is that we should activate this module from the beginning since the user wants it and expects to work after refreshing the Backend page (System > Tools > Backup).

I haven't checked in System > Configuration > Advanced > Advanced if the module output is also Disable after installation. In my case it is Enable, but I don't have an OpenMage installed from scratch.

[fballiano]

it seems a legitimate request so #4 ;-)