Remove unused variable and add copy constructor.

headers/libs/linprog/Summand.h

@@ -19,6 +19,7 @@ class Variable;
  */
 class Summand {
 public:
+								Summand(Summand* summand);
 								Summand(double coeff, Variable* var);
 								~Summand();
 
@@ -31,7 +32,6 @@ public:
 private:
 			double				fCoeff;
 			Variable*			fVar;
-			bool    			fUsedInPenaltyFunction;  //not set yet
 };
 
 typedef BObjectList<Summand> SummandList;

src/libs/linprog/Summand.cpp

@@ -9,6 +9,28 @@
 #include "Variable.h"
 
 
+Summand::Summand(Summand* summand)
+	:
+	fCoeff(summand->Coeff()),
+	fVar(summand->Var())
+{
+}
+
+
+Summand::Summand(double coeff, Variable* var)
+	:
+	fCoeff(coeff),
+	fVar(var)
+{
+}
+
+
+Summand::~Summand()
+{
+
+}
+
+
 /**
  * Gets the summmand's coefficient.
  * 
@@ -62,23 +84,3 @@ Summand::VariableIndex()
 {
 	return fVar->Index();
 }
-
-
-/**
- * Destructor.
- */
-Summand::~Summand()
-{
-
-}
-
-
-/**
- * Constructor.
- */
-Summand::Summand(double coeff, Variable* var)
-{
-	fCoeff = coeff;
-	fVar = var;
-	fUsedInPenaltyFunction = false;
-}