Commit request: www/madsonic: Update to 6.2.9040 (Latest stable release)

[Hiroki Tagato]

Hi ports committers,

Could someone pick up the following PR to commit to the tree?

Bug 223181 - www/madsonic: Update to 6.2.9040 (Latest stable release)
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223181

Changes are:
- A patch to update www/madsonic to 6.2.9040 (latest stable release)
- Replace exec/unexec with postexec/postunexec

Already got an approval from the maintainer.

Thanks,
Hiroki Tagato