fix(log): 修复默认日志实例命名冲突并优化宏定义

将 `logger_root` 重命名为 `__default_logger_root` 以避免潜在的符号冲突，
同时简化日志宏定义逻辑，提升代码可读性与维护性。此外，为防止 clang-format
格式化影响日志宏的排版，添加了 clang-format 开关注释。

refactor(memory): 优化 memcmp 函数中的 switch-case 结构

在 `smcc_memcmp` 函数中为每个 case 添加 `/* fall through */` 注释，
明确表示故意穿透到下一个 case，提高代码意图的清晰度，并增强静态分析工具的兼容性。

runtime/libcore/src/memory.c

@@ -222,81 +222,97 @@ int smcc_memcmp(const void *s1, const void *s2, usize n) {
                 i = 15;
                 break;
             }
+            /* fall through */
         case 15:
             if (p1[14] != p2[14]) {
                 i = 14;
                 break;
             }
+            /* fall through */
         case 14:
             if (p1[13] != p2[13]) {
                 i = 13;
                 break;
             }
+            /* fall through */
         case 13:
             if (p1[12] != p2[12]) {
                 i = 12;
                 break;
             }
+            /* fall through */
         case 12:
             if (p1[11] != p2[11]) {
                 i = 11;
                 break;
             }
+            /* fall through */
         case 11:
             if (p1[10] != p2[10]) {
                 i = 10;
                 break;
             }
+            /* fall through */
         case 10:
             if (p1[9] != p2[9]) {
                 i = 9;
                 break;
             }
+            /* fall through */
         case 9:
             if (p1[8] != p2[8]) {
                 i = 8;
                 break;
             }
+            /* fall through */
         case 8:
             if (p1[7] != p2[7]) {
                 i = 7;
                 break;
             }
+            /* fall through */
         case 7:
             if (p1[6] != p2[6]) {
                 i = 6;
                 break;
             }
+            /* fall through */
         case 6:
             if (p1[5] != p2[5]) {
                 i = 5;
                 break;
             }
+            /* fall through */
         case 5:
             if (p1[4] != p2[4]) {
                 i = 4;
                 break;
             }
+            /* fall through */
         case 4:
             if (p1[3] != p2[3]) {
                 i = 3;
                 break;
             }
+            /* fall through */
         case 3:
             if (p1[2] != p2[2]) {
                 i = 2;
                 break;
             }
+            /* fall through */
         case 2:
             if (p1[1] != p2[1]) {
                 i = 1;
                 break;
             }
+            /* fall through */
         case 1:
             if (p1[0] != p2[0]) {
                 i = 0;
                 break;
             }
+            /* fall through */
         default:
             break;
         }