【背景】
解决toybox已支持命令的遗留问题，新增命令功能。

【修改方案】
1. 移植toybox并在原码其他仓进行适配。

【影响】
对现有的产品编译不会有影响。

re #I41N2A
Signed-off-by: Nwangchen <253227059@qq.com>

isolate changes, keep orignal musl sources clean.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Id7f3a5109771f93d397e30febba36e09ddaf4f36

Description:add unsupport api print
Team: OTHERS
Feature or Bugfix:Feature
Binary Source:No
PrivateCode(Yes/No):No

Change-Id: If54639f876c6c6d546f36f65a83e3d4ae94a58f0
Reviewed-on: http://mgit-tm.rnd.huawei.com/10522043Tested-by: Npublic jenkins <public_jenkins@notesmail.huawei.com>
Reviewed-by: Ncaoruihong 00546070 <crh.cao@huawei.com>
Reviewed-by: Nshenwei 00579521 <denny.shenwei@huawei.com>

this allows getgrnam and getgrgid to share code with the _r versions
in preparation for alternate backend support.