Added parent tag pointer throughout call hierarchy.Cleaned up output hierarchy parameter names.

__for.cpp

@@ -4,7 +4,7 @@
 
 namespace jet {
 
-   __for::__for(coreutils::ZString &in, coreutils::MString &out, Global &global) : Tag(in, out, global) {
+   __for::__for(coreutils::ZString &in, coreutils::MString &parentOut, Global &global, Tag *parent) : Tag(in, parentOut, global, parent) {
       double counter = 0.0f;
       double end = 0.0f;
       double step = 0.0f;