Made $[%name] to retrieve keyword values in a tag. Has bugs.

Operand.h

@@ -9,7 +9,10 @@ namespace jet {
    class Operand {
 
     public:
-      Operand(coreutils::ZString &in, Global &global, std::map<coreutils::MString, coreutils::MString> &lvariables);
+      Operand(coreutils::ZString &in,
+	      Global &global,
+	      std::map<coreutils::MString, coreutils::MString> &lvariables,
+	      std::map<coreutils::MString, coreutils::MString> &keywords);
 
       bool isNumber;