Add NRAO SIW Conference Directories

Add /var/nrao owned to the demo1 account for the SIW Conference

From kscott:
We would like a /var/nrao directory created on each Linux machine in
these rooms.  The directory permissions should be 0777 and owned by
the demo1 account.
Merge pull request #8 from NMTCC/nraodirectory

Add NRAO SIW Conference Directories
Add texlive-epstopdf to yum package list

Add the texlive-epstopdf package to package list, this will  also bring
in texlive-epstopdf-bin with the requested epstopdf binary.

From john 20140421124923:
I need the 'epstopdf' utility on the login machines.  This is necessary
because I have a lot of DocBook documents that have LaTeX equations in
them, and the Makefiles build PDFs for the PDF rendering.
Merge pull request #9 from NMTCC/epstopdf

Add texlive-epstopdf to yum package list