stupid mysql...
copy default sysctl.conf from ubuntu 12.04
change shared memory limit for ubuntu
allow changing max_locks_per_transaction
do not use pw for pgsql
find through symlinks
Revert "err no block_ports please"

This reverts commit cea949dbb2ef9d4706e3ca813db02d702762f967.
dependencies
skip virtual user and group when not using virtual delivery