Brazilian swap implementation :
[PLAT-4412] :  Last time calculators.
[PLAT-4411] : add Brazilian currency.
[PLAT-4410] : add Brazilian overnight index CDI.
[PLAT-4405] : creat the Brazilian swap definition .
[PLAT-4404] : create a portfolio of ON compounded swaps.
[PLAT-4309] : Present value and curve sensitivity for accrued compounded swaps (Brazilian swaps).
[PLAT-4310] : ParSpread and ParSpread curve sensitivity for accrued compounded swaps (Brazilian swaps).
[PLAT-4403] : Generator for ON compounded swap (Brazilian swap).
[PLAT-4311] : Example of curve construction for Brazilian swaps.
[PLAT-4321] : test of every file concerning Brazilian swapa.