I added the AMR test database reader. It is a simple database reader
which provides a 2d AMR grid. It generates the data internal to the 
reader and to use the reader you should open a zero length file that 
ends in ".amrtest". It can be used as an example for creating an AMR 
database reader.



git-svn-id: http://visit.ilight.com/svn/visit/trunk/src@22388 18c085ea-50e0-402c-830e-de6fd14e8384