1, self compile: ../lex/scf_macro_expr.c & ../lex/scf_lex_util.c ok,

1, self compile: ../lex/scf_macro_expr.c & ../lex/scf_lex_util.c ok,
2, support xor operator ^,
3, fix: core dump caused by 'empty 3ac code list' of some basic block, in x64_bb_load_dn2(),
4, fix: parse error of complex expr at Line:657 of __macro_if_expr(),
5, fix: array init when index is a const enum, in _data_action_index(),

6, fix: self compile for __use_macro() in ../lex/scf_macro.c, failed source code like below:

    if ((ret = scf_string_cat(s0, s1)) && (ret = scf_string_cat(s0, s2)) ) {
            // ...
    }

7, fix: wild pointer when 'do-while' with a complex condtion expr & followed by a 'if-else',
    source code like below:

    int c = '0';
    do {
    } while ('a' <= c && 'z' >= c);

    int type = 1;
    if (type < 0)
            return 1;