CVS commit by staikos: 

not entirely sure if this works yet, but get it compiling on darwin


  M +2 -0      kstvector.cpp   1.53


--- kdeextragear-2/kst/kst/kstvector.cpp  #1.52:1.53
@@ -38,4 +38,6 @@
 #ifdef isnan
 #define KST_ISNAN(a)    isnan(a)
+#elif defined(__APPLE__)
+#define KST_ISNAN(a)    (a == NAN ? 1 : 0)
 #else
 #define KST_ISNAN(a)    std::isnan(a)