[CentOS] Add repo for xfig package

From: hersh parikh <hershparikh12 at yahoo.com>
>From: Nicolas Thierry-Mieg <Nicolas.Thierry-Mieg at imag.fr>
>> xfig and transfig are in centos 5, why don't you just use the regular 
>> centos repo?
> We have tried it says no packages available..if its working for you can you 
> please paste you .conf file here?

Strange...  As said, it is in the CentOS base repo..

# yum list xfig
...
Available Packages
xfig.x86_64                         3.2.4-21.3.el5                          base

http://vault.centos.org/5.5/os/i386/CentOS/xfig-3.2.4-21.3.el5.i386.rpm
http://vault.centos.org/5.5/os/x86_64/CentOS/xfig-3.2.4-21.3.el5.x86_64.rpm

JD