Update output file format to meet Monero 0.13.0.0

[SamsungGalaxyPlayer]

The official Monero wallets and the official blackball tool will change the blackball file output to be saved in a much smaller size for the 0.13 release. This xmreuse tool should be updated to meet this format so that this blackball database can be imported in the wallet directly or imported into the blackball tool to check for chain reactions.

[sneurlax]

The format needed is:

@N    # next outputs are for amount N, until next change
N     # blackball output N of current amount
N*X   # blackball output N..N+X-1 of current amount

[sneurlax]

A question I have is if the outputs N are referenced by absolute index, and if so how to go from key to amount... because I already have the index.

[sneurlax]

RinCT output amounts are deemed to be 0:

so if I'm listing ringct outputs for the new blackball input format, I'd use @0 and then one absolute output index per line?
3:32 PM <•moneromooo> Yes, that'd work.