Closed issue by arete on void-packages repository

https://github.com/void-linux/void-packages/issues/243

Description:
For next postgresql update(version 10), is correct
add an alternative package postgresql9.6 to fix dump/restore database procedure for update ?
Or add an package postgresql upgrade like to
https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/postgresql-old-upgrade