Changed filenames:
avp/win95/system.c (avp_load_rif calls)
and other places that forgot to be documented
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is AvP.CurrentEnv and StartingEnv used?
Env_List can be removed
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SCREENDESCRIPTORBLOCK.SDB_DiagonalWidth is unused
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movement.txt and genparam.txt code is unused
the english.txt file could be removed also
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there is some unused junk in comp_shp.c
