Correction for Africa 2009r

[David Stonehill]

Thank you for the outstanding work you are doing on time zone history 
and definitions.  It is unique on the web.

In tz version 2009r, africa,
     the Rules for Mauritius and the Zone for Indian/Mauritius
     all need a tab character between
     the word "Rule" or "Zone" and the following arguments

Inserting this character will make these lines consistent with other 
similar lines in the file.

Thanks again.

                   Dave Stonehill