Convert parser operand structure to jsp_operand_t class, move operand types to enum defined in the class.

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com

jerry-core/parser/js/scopes-tree.h

@@ -24,8 +24,6 @@
 #include "lit-id-hash-table.h"
 #include "lit-literal.h"
 
-#define NOT_A_LITERAL (lit_cpointer_t::null_cp ())
-
 typedef struct
 {
   lit_cpointer_t lit_id[3];