Disable incorrect use of resupply_all() in load and lload

Disable incorrect use of resupply_all() in load and lload

load_land_ship() and load_land_land() automatically resupply the land
units they load.  This can draw supplies from the sector where the
land units are.  When load() and lload() later update the sector, they
wipe out the update made for drawing supplies, and we get a seqno
mismatch oops.  Highly abusable.