backed out a qkumba optimization that in retrospect I am not sure
what it was doing but it was broken subtly in at least 2 places
could probabl be re-optimized again, especially the pt3_lib version
was playing OOTW ending wrong
was an accidentally commented out "lda #0" blurgh
some other code cleanups while at it, mostly making it match
the pt3_player code a bit more
also stop using TEMP from interrupt as other code might use it
