namespace fix for using with nodejs

Author: trevnorris

src/distribution.js

@@ -926,4 +926,4 @@ jStat.extend({
 	}
 });
 
-})( this.jStat, this.Math);
+})( this.jStat, Math );

src/special.js

@@ -470,4 +470,4 @@ jStat.extend({
 	}
 });
 
-})( this.jStat, this.Math );
+})( this.jStat, Math );