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

__read.cpp

@@ -6,7 +6,7 @@
 
 namespace jet {
    
-   __read::__read(coreutils::ZString &in, coreutils::MString &parent, Global &global) : Tag(in, parent, global) {
+   __read::__read(coreutils::ZString &in, coreutils::MString &parentOut, Global &global, Tag *parent) : Tag(in, parentOut, global, parent) {
       if(!variableDefined("file"))
 	throw coreutils::Exception("file keyword must be specified.");
       if(!variableDefined("name"))