add do1-do7 di1 procfs

hc

2023-10-12 3124110e504ba82e43686669ed7188bcdbe72744

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# Locally computed
sha256    cdfbf5a7e8dc8fbbe0d6c1e83cd3bd3f2472160aac65684bb01ef661c626a8e4    Pound-2.7.tgz