SOC1-141: Restructured deconstruction buffer to remove registers and do packet breakdown on engine output port data

SOC1-121: Reworked simulation flow, updated RTL to fix simulation bugs and moved modified CMSDK files

SOC1-141: Updated Filelists to work with Icarus Verilog and changed accelerator environment variable name

SOC1-141: Parameterised Packet Constructor, re-worked ahb interface and created new top-level packet constructor module

Updated Sourceme behaviour and added script to read in system stimulus from accelerator and generate addressed 32bit writes