Fix the ignore ext list
修正忽略文件后缀列表

Signed-off-by: Wanpeng Song <swpustc@mail.ustc.edu.cn>
Merge branch 'sources' into projects

Signed-off-by: Wanpeng Song <swpustc@mail.ustc.edu.cn>
Ignore files
忽略文件

Signed-off-by: Wanpeng Song <swpustc@mail.ustc.edu.cn>
Merge branch 'projects' into dev-2

Conflicts:
	project/preprocess.bat

Signed-off-by: Wanpeng Song <swpustc@mail.ustc.edu.cn>