Added until tag.

__until.h

@@ -0,0 +1,18 @@
+#ifndef ____until_h__
+#define ____until_h__
+
+#include "Tag.h"
+#include <sstream>
+
+namespace jet {
+   
+   class __until : public Tag {
+   
+    public:
+      __until(coreutils::ZString &in, coreutils::MString &parentOut, Global &global, Tag *parent);
+   
+   };
+      
+}
+
+#endif