Lot's of work on a CGenerator, AST and language improvements

include/Parser.h

@@ -49,10 +49,9 @@ class Parser {
 
 		std::vector< State* > stateSets;
 
-		//The EOFSymbol, a pointer because of use in table, etc
 		Symbol EOFSymbol;
-		//The nullSymbol, ditto with above. Also used in comparisons
 		Symbol nullSymbol;
+		Symbol invalidSymbol;
 
 		Table table;