What (a) is the total number of indemnities granted to the SA Police Service in terms of section 18 of the Domestic Violence Act, Act 116 of 1998, (i) in the (aa) 2007-08, (bb) 2008-09, and (cc) 2009-10 financial years and (ii) for the 2010-11 financial year and (b) were the reasons for granting these indemnities?