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

__mysql.cpp

@@ -4,7 +4,7 @@
 
 namespace jet {
 
-   __mysql::__mysql(coreutils::ZString &in, coreutils::MString &parent, Global &global) : Tag(in, parent, global) {
+   __mysql::__mysql(coreutils::ZString &in, coreutils::MString &parentOut, Global &global, Tag *parent) : Tag(in, parentOut, global, parent) {
       
       if(!variableDefined("host"))
 	throw coreutils::Exception("host must be specified for mysql tag.");