A synthetic aletheia tree for tests/test_ovlink.c and cmake/overlays.cmake:
the layout of four overlays (0 and 1 share the window 0x02200000, 2 sits at
0x02300000, 230 carries five static initialisers at the addresses the real
ov230's are recorded at), their manifest shards, matched-style sources and
listing annotations, and one ARM9 caller.  Written by hand; no game data.
