[x/programs] Improve external program function call DX #659
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I think this is a slight improvement to the current way we are calling external programs. We never use the calling
programID
anyways.I do see us needing to distinguish between a
caller
vstarget
for reentrancy purposes later on, but imo the calling vs target programID should be managed by the engine/runtime. Thus passing the program ID of thecaller
should be handled outside of rust. If needed, wouldn't be a hard change to revert.