loongson/mirror: links for rtimulib

loongson/mirror RTIMULib-7.2.1.tar.gz
loongson/mirror RTIMULib-7.2.1b1.tar.gz
loongson/mirror RTIMULib-7.2.1b1-cp35-cp35m-manylinux1_x86_64.whl
loongson/mirror RTIMULib-7.2.1b1-cp35-cp35m-linux_armv7l.whl
loongson/mirror RTIMULib-7.2.1b1-cp34-cp34m-manylinux1_x86_64.whl
loongson/mirror RTIMULib-7.2.1b1-cp34-cp34m-linux_armv7l.whl
loongson/mirror RTIMULib-7.2.1b1-cp27-cp27mu-manylinux1_x86_64.whl
loongson/mirror RTIMULib-7.2.1b1-cp27-cp27mu-linux_armv7l.whl