Please make the zlib compression flags a macro which
is adjustable at build time. It is difficult for
me to adjust the compression level at compilation time
and I have found that w9 is far too agressive for
> The build-time compression flags are "w9" in
> build/pack.c cpio_gzip(). Change 9 to any of [0-9]
> and recompile ...
Added %_payload_compression in rpm-3.0.4.