TBH:  This can be used by folks who are working on DFI and 4DVAR.  
TBH:  Compare test/em_b_wave/namelist.input vs. 
TBH:  test/em_b_wave/namelist.input.backwards to see how to make the clock 
TBH:  go backwards.  
TBH:  I also ripped out RCS keywords (affects comments only).  


git-svn-id: https://svn-wrf-model.cgd.ucar.edu/trunk@1818 b0b5d27b-6f0f-0410-a2a3-cb1e977edc3d