What is the (a) full financial value of (i) funds and (ii) guarantees received by SA Airways (SAA) from (aa) the National Treasury and/or (bb) any other national department from 1 January 1997 to date, (b) detailed breakdown of these allocations to each department of SAA in each year, (c) motivation for providing the funds in each case and (d) detailed breakdown of the amounts of guarantees (i) requested and (ii) granted in each case?