loongson/pypi: links for metabochumpy

loongson/mirror metabochumpy-0.67.6.post2.tar.gz
loongson/mirror metabochumpy-0.67.6.post1.tar.gz
loongson/mirror metabochumpy-0.67.5.post3.tar.gz
loongson/mirror metabochumpy-0.67.5.post2.tar.gz
loongson/mirror metabochumpy-0.67.5.post1.tar.gz