Fix bugs caused by encoding in the DMD compiler under Windows

[mm]

我又试了一次,不进行 2.1 --2.10行不通的
I tried again, it won't work without going through 2.1 to 2.10


E:\Users\mm\Desktop\code\d\新建文件夹>dmd 我.d
Error: cannot find input file `我.d`
import path[0] = 
E:\cx\Programming\Complier_interpretr_Actuat\d\dmd.2\windows\bi
n64\..\..\src\phobos
import path[1] = 
E:\cx\Programming\Complier_interpretr_Actuat\d\dmd.2\windows\bi
n64\..\..\src\druntime\import

当修改1.1 --1.3后 就会出现以上问题的
The above issues will occur after modifying 1.1 to 1.3