"Cinema" system, for handling cinematics

[hogsy]

These are very nicely documented for us, for the most part.

# cineid = number [0,998]
# script = name : version : blockcount
# block = name : flags
# path = order : name : type : flags : timeofs : maxlen : color : count
# node = type : flags : timelen : other-data

Of course, we're lacking explanations on what these mean/do right now but I think I get the general structure.

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