loongson/pypi: links for pycast

loongson/mirror pycast-v0.1.5_alpha-py2.7.egg
loongson/mirror pycast-v0.1.2_alpha-py2.7.egg
loongson/mirror pycast-v0.1.5-alpha.tar.gz
loongson/mirror pycast-v0.1.5-alpha.macosx-10.10-intel.tar.gz