1) I deleted the pengra config site files since that machine no longer
   exists.

2) I made some miscellaneous changes to the config site files. These
   include moving the silo library information after the hdf5 library
   information, cleaning up comments, and cleaning up white space.



git-svn-id: http://visit.ilight.com/svn/visit/trunk/src@6684 18c085ea-50e0-402c-830e-de6fd14e8384