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

__until.cpp

@@ -47,7 +47,7 @@ namespace jet {
 	    keywords["expr"].reset();
 	    keywords["expr"] = exprSaved;
 	    resolveKeyword("expr");
-	    booleanResult = Operand(keywords["expr"], global, parent->variables).boolean;
+	    booleanResult = Operand(keywords["expr"], global, parent->variables, keywords).boolean;
 	 } else {
 	    booleanResult = false;
 	    int rc = keywords["value1"].compare(keywords["value2"]);