BUG #14620: pgdg93 repo libevent conflict

The following bug has been logged on the website:

Bug reference: 14620
Logged by: Constantinos Eleftheriou
Email address: constantinos(dot)eleftheriou(at)ed(dot)ac(dot)uk
PostgreSQL version: 9.3.6
Operating system: Centos 6
Description:

Hello,

We've had a series of failed updates for libevent, which appear to relate on
a version mismatch between the version provided by pgdg93 and the centos
base repo.

Error: Transaction Check Error:
file /usr/lib64/libevent-2.0.so.5 from install of
libevent2-2.0.21-2.el6.x86_64 conflicts with file from package
libevent-2.0.19-1.rhel6.x86_64
file /usr/lib64/libevent_core-2.0.so.5 from install of
libevent2-2.0.21-2.el6.x86_64 conflicts with file from package
libevent-2.0.19-1.rhel6.x86_64
file /usr/lib64/libevent_extra-2.0.so.5 from install of
libevent2-2.0.21-2.el6.x86_64 conflicts with file from package
libevent-2.0.19-1.rhel6.x86_64

Is there a known workaround for this?

Regards,
Constantinos Eleftheriou
Unix Systems Administrator
University of Edinburgh