This makes for a cleaner apps/progs.h as well as as cleaner
apps/build.info.
We also break out the type declarations to apps/include/function.h
apps/progs.c and apps/progs.h are NOT regenerated when 'apps' is
disabled.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9340)
