added conversion script and templates for geoclaw
changed to unformatted prints in setrun_template_geoclaw_2d_shallow.py to give nicer output -- should make same change to other setrun templates
geoclaw requires use_fwaves == True
add gauges and regions properly for geoclaw converstion
Changes to data.py needed for geoclaw option to specify fgmax input files (backwards compatible)
Merge pull request #58 from rjleveque/fgmax3

Added fgmax support and fixed various other geoclaw issues