the push is modified as follows:

1. delete some junk files.
2. mqttclient added comments and updated to v1.0.2.
3. update README.md.
4. update the author's own server certificate.
5. minor changes to salof.

components/connectivity/mqttclient/common/log/arch/tencentos-tiny/arch.c

@@ -2,11 +2,12 @@
  * @Author: jiejie
  * @Github: https://github.com/jiejieTop
  * @Date: 2019-12-26 19:11:34
- * @LastEditTime : 2019-12-28 01:51:38
+ * @LastEditTime: 2020-03-02 01:32:23
  * @Description: the code belongs to jiejie, please keep the author information and source code according to the license.
  */
-#include "config.h"
+#include "salof_defconfig.h"
 
+#ifdef USE_LOG
 
 void *salof_alloc(unsigned int size)
 {
@@ -119,3 +120,4 @@ char *salof_get_task_name(void)
     return k_curr_task->name;
 }
 
+#endif