sql variables work now.

__sql.cpp

@@ -9,7 +9,7 @@
 
 namespace jet {
    
-   __sql::__sql(coreutils::ZString &in, coreutils::MString &out, Global &global) : Tag(in, out, global) {
+   __sql::__sql(coreutils::ZString &in, coreutils::MString &parent, Global &global) : Tag(in, parent, global) {
       output = false;
       if(!hasContainer)
 	throw coreutils::Exception("sql tag must have a container.");