loongson/pypi: links for econtent

loongson/mirror econtent-1.4.6.tar.gz
loongson/mirror econtent-1.4.5.tar.gz
loongson/mirror econtent-1.4.4.tar.gz
loongson/mirror econtent-1.4.3.tar.gz
loongson/mirror econtent-1.4.2.tar.gz
loongson/mirror econtent-1.4.1.tar.gz
loongson/mirror econtent-1.4.tar.gz