This is the input processing, which accepts delivered news, spools it up,
and later processes it.

bdecode.c	decoder for robust news-via-mail transmission encoding
c7decode.c	decoder for strange obsolete transmission encoding
gunzip		invoker for gunzip, to process incoming gzipped news
newsrun		master control for processing of spooled news
newsrunning	enable and disable newsrun
newsspool.c	delivery program to spool an article/batch
recenews	receives mailed news, runs it through bdecode and rnews
recpnews	ditto for the old N-prefix "encoding"
rnews		receive incoming news from uucp (etc.) and spool it
