[erepb]

two fixes:

1. squads when sharing enemy info will transfer last known position instead of current.
2. NPC will use last known position instead of current when deciding if they should fire or not

tested with debug NPC spawns.
first fix realistically only affects when player fights more than one faction (that are friendly to each other)
second one will allow NPC land (or not land) suppressive fire to the last known target location regardless of where target moved since