Optimization build method
优化生成行为
Merge branch 'dev-2'

Signed-off-by: 宋万鹏@HP-CQ42 <swpustc@mail.ustc.edu.cn>
Optimization build and upgrade libxml2(v2.9.2)
优化生成行为，更新libxml2到v2.9.2
Merge branch 'dev-2'

Signed-off-by: 宋万鹏@HP-CQ42 <swpustc@mail.ustc.edu.cn>