Previously to recompile DynOS assets you had to remove the
bin/lvl/bhv/tex/col/etc files. Now the game will compare the
last-modified-timestamps of the generated/compiled assets vs
the other files that are within those directories. If the presumed-
source files have a later modified timestamp DynOS will regenerate
those assets.
While this results in scanning the attributes of files more, it
also prevents parsing files unnecessarily. Previously actors
would always parse their source files and build up GfxData
unnecessarily.
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Co-authored-by: MysterD <myster@d>
