calc66: #i75279# improved accuracy of BINOMDIST; patch from Regina

Conflicts:
	sc/source/core/tool/interpr3.cxx

sc/source/core/inc/interpre.hxx

@@ -709,6 +709,7 @@ double GetGamma(double x);
 double GetLogGamma(double x);
 double GetBeta(double fAlpha, double fBeta);
 double GetLogBeta(double fAlpha, double fBeta);
+double GetBinomDistPMF(double x, double n, double p); //probability mass function
 void ScLogGamma();
 void ScGamma();
 void ScPhi();