Parser improvements.

The number of delete opcodes is reduced to two from six. The
range of numbers which can be included in the byte code is
doubled from (-127,127) to (-256,256).

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

jerry-core/parser/js/js-lexer.h

@@ -185,7 +185,7 @@ typedef enum
    ((((token_type) - LEXER_PLUS) * 2) + CBC_PLUS)
 
 #define LEXER_UNARY_LVALUE_OP_TOKEN_TO_OPCODE(token_type) \
-   ((((token_type) - LEXER_KEYW_DELETE) * 6) + CBC_DELETE)
+   ((((token_type) - LEXER_INCREASE) * 6) + CBC_PRE_INCR)
 
 #define LEXER_BINARY_OP_TOKEN_TO_OPCODE(token_type) \
    ((cbc_opcode_t) ((((token_type) - LEXER_BIT_OR) * 3) + CBC_BIT_OR))