loongson/pypi: links for emdash

loongson/mirror emdash-2.2b5.tar.gz
loongson/mirror emdash-2.2b4.tar.gz
loongson/mirror emdash-2.2b3.tar.gz
loongson/mirror emdash-2.2b2.tar.gz
loongson/mirror emdash-2.2b1.win32.exe
loongson/mirror emdash-2.2b1.tar.gz
loongson/mirror emdash-2.1b5.win32.exe
loongson/mirror emdash-2.1b5.tar.gz