Disable change owner or permissions after emerge
 

Hello!
How disable change owner or permissions of a file after emerge atom?
For example: before upgrade pnp4nagios:

getfacl: Removing leading '/' from absolute path names
# file: etc/pnp/config.php
# owner: nagios
# group: apache
user::rw-
group::r--
other::---


after

getfacl: Removing leading '/' from absolute path names
# file: etc/pnp/config.php
# owner: nagios
# group: nagios
user::rw-
group::r--
other::---