mirny: add build and flashing instructions
There's some overlap (ISE) but not all (no Migen, but xc3sprog). So I just repeated that.
update pounder patch to work with newest stabilizer main 198d5f0
mirny: add build and flashing instructions
[Legacy] Almazny instructions improvements for ARTIQ-8
aux: increase max payload size
DRTIOAux (small) overhaul