[ucsim] Reorg of source tree
tree18ab156916f71984bc2232eed87632e98178b0bf
drwxr-xr-x - sdcc-build
drwxr-xr-x - sdcc-cf
drwxr-xr-x - sdcc-extra
drwxr-xr-x - sdcc-web
drwxr-xr-x - sdcc