poor configuration for entity data bin size allowances

[Fred T. Hamster]

saw problem when doing the serene backer upper thing;
the error shown was: size limit would be exceeded by blah blah
and it's from: feisty_meow/octopi/library/octopus/entity_data_bin.cpp

we need to allow larger data sizes, and possibly consider letting this be configured from an ini file.

do we even need to limit this? if the thing is up to date, why can't it build for a big, while we still have lots of memory?

do we actually store all the entity data bin in memory? argh, it should be pageable out to disk.