Ensure db updates are run for 5.3.alpha1

[seamuslee001]

ping @eileenmcnaughton @totten @monishdeb this is for the RC with the RC all we need to do is to add this then anyone once the 5.4 tarball comes out will get smooth upgrade from 5.2 upwards using the 5.4 tarball

[civibot]

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[eileenmcnaughton]

@seamuslee001 this is effectively a port of a patch already merged to 5.3?

[seamuslee001]

Correct but i haven't done anything about copying the contents of what is still in the 5.3.alpha1.mysql.tpl file

[eileenmcnaughton]

OK seems fine - seems like this is fine for 5.4 but if we decide to forward merge the security changes we will need to be wary of this

[seamuslee001]

Merging as per the tag