cbuild: force unsafe IO on dpkg
Should yield a small performance gain due to not doing fsync so often.
References:
- https://wiki.debian.org/Teams/Dpkg/FAQ#Q:_Why_is_dpkg_so_slow_when_using_new_filesystems_such_as_btrfs_or_ext4.3F
- mesa/mesa#6878 (closed)
Signed-off-by: David Heidelberg david.heidelberg@collabora.com
Edited by David Heidelberg