Changed representation to dayfracts instead of days. Note: This class is currently not used in finmath lib and it not tested well enough.

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@883 48fcbb9e-5639-0410-8b25-842128a4905d
Changed representation to dayfracts instead of days. Note: This class is currently not used in finmath lib and it not tested well enough.

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@884 48fcbb9e-5639-0410-8b25-842128a4905d
Added constructor to specify interpolation methods of DiscountCurve.

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@885 48fcbb9e-5639-0410-8b25-842128a4905d
Added code to allow valuation of empty periods (value of this period is zero).

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@886 48fcbb9e-5639-0410-8b25-842128a4905d
Requesting a forward on an empty period will throw an IllegalArgumentException.

git-svn-id: http://svn.finmath.net/finmath%20lib/trunk@887 48fcbb9e-5639-0410-8b25-842128a4905d