BUG #7750: pid file conflict in RedHat

The following bug has been logged on the website:

Bug reference:      7750
Logged by:          Timothy J Bruce
Email address:      postgres@tbruce.com
PostgreSQL version: 9.1.6
Operating system:   RedHat v6.2
Description:        =


In line 238 of the rpm based init.d script, the pid file is called
specifically with a qualified path ("status -p
/var/run/postmaster-9.1.pid"), even though line 70 specifies a variable to
point to the pid file (pidfile=3D"/var/run/postmaster-9.1.pid").

This is with rpm version of postgres 9.1.4 and 9.1.6 (we haven't tested
9.1.7 at this time).