All of these patches did the same thing, which is already in upstream
config.sub.
With this change, we need only add `use_fresh_config_sub=true` to
the package.sh file.
Note that this is not done automatically in case the port has a modified
config.sub file.
This patch fixes the m4 port by removing unneeded make subdirs that
would cause the build to fail on some systems. We now only care about
the `lib` and `src`.
