In some cases packages are built outside of a directory which contains
pkgname-pkgver, this results in source listing in debug packages having
a conflicting path like `/usr/src/debug/build/` which is not ideal.
This patch ensures we always include the pkgbase to ensure the paths are
unique.
Signed-off-by: Morten Linderud <morten@linderud.pw>
Signed-off-by: Allan McRae <allan@archlinux.org>
776b7c1e75