Add forward declarations.

--- fasthenry-3.0/src/fasthenry/sparse/spUtils.c.orig	2015-07-22 12:12:52.579370846 +0200
+++ fasthenry-3.0/src/fasthenry/sparse/spUtils.c	2015-07-22 12:14:09.636275633 +0200
@@ -107,6 +107,7 @@
 #include "spDefs.h"
 
 
+static RealNumber ComplexCondition( MatrixPtr, RealNumber, int* );