loongson/pypi: links for pygraphics

loongson/mirror PyGraphics-2.1.win32.exe
loongson/mirror PyGraphics-2.1.tar.gz
loongson/mirror PyGraphics-2.0.1.win32.exe
loongson/mirror PyGraphics-2.0.1.tar.gz
loongson/mirror PyGraphics-2.0.win32.exe
loongson/mirror PyGraphics-2.0.tar.gz
loongson/mirror PyGraphics-2.0.dmg
loongson/mirror PyGraphics-2.1.osx.dmg
loongson/mirror PyGraphics-2.0.1-Installer.dmg