BUG #11729: Packaging not FHS conform

The following bug has been logged on the website:

Bug reference:      11729
Logged by:          Dominik Fischer
Email address:      dom_fischer@web.de
PostgreSQL version: 9.3.5
Operating system:   Centos 7 (and other RPM based OS)
Description:

The RPM from postgresql.org installs postgresql to /usr/pgsql-9.3 which is
not FHS compliant. It should be located under /opt. Please see
http://www.pathname.com/fhs/pub/fhs-2.3.html#OPTADDONAPPLICATIONSOFTWAREPACKAGES
for further reference.