attempted repost: discussion around a change from 9.4.1-1 ?

i'm trying to understand more about this change since it, seems to have unpleasant results during a yum update when there are multiple server versions installed on a machine at the same time.

* Tue Feb 03 2015 Devrim Gündüz <devrim@gunduz.org> - 9.4.1-1PGDG
- Update to 9.4.1, per changes described at:
  http://www.postgresql.org/docs/9.4/static/release-9-4-1.html
- Improve .bash_profile, and let users specify their own
  environmental settings by sourcing an external file, called
  ~/.pgsql_profile. Per request from various users, and final
  suggestion from Martin Gudmundsson.




that it wiped out the ~postgres/.bash_profile that existed too, which caught some of my peers by surprise.


I realize this was 'a long time ago' and they should have raised the concern sooner but I'm just trying to educate myself on the discussion around this first.

-Mark