!73 merge master into master

usr目录下增加软连接

Created-by: lyn1121
Commit-by: lyn1121
Merged-by: openharmony_ci
Description: ### 相关的Issue
#40

### 原因（目的、解决的问题等）
命令规格整理

### 描述（做了什么，变更了什么）
在support_usr_symlink开启时，向usr目录下新增软连接

### 测试用例（新增、改动、可能影响的功能）


### 是否需要同步至release（如：3.0LTS ... ）分支？

必须选择一项（在MarkDown模式下用[x]替换[ ]即可勾选对应选项）:
- [ ] 是，需要同步的分支：
- [x] 否

理由：




See merge request: openharmony/third_party_mksh!73

BUILD.gn

@@ -257,6 +257,11 @@ if (defined(ohos_lite)) {
       "-Wl,-z,now",
       "-Wl,-z,noexecstack",
     ]
+    if (mksh_feature_support_usr_symlink) {
+      symlink_target_name = [
+        "../usr/bin/sh",
+      ]
+    }
     install_images = [
       "system",
       "ramdisk",

bundle.json

@@ -17,7 +17,10 @@
         "name": "mksh",
         "subsystem": "thirdparty",
         "syscap": [],
-        "features": [ "mksh_terminal_ext" ],
+        "features": [ 
+            "mksh_terminal_ext",
+            "mksh_feature_support_usr_symlink"
+        ],
         "adapted_system_type": [
             "standard",
             "small"

mksh.gni

@@ -30,4 +30,5 @@ MKSH_SRC_DIR = [ "//third_party/mksh" ]
 
 declare_args() {
   mksh_terminal_ext = false
+  mksh_feature_support_usr_symlink = false
 }