New version of advanc.f with stack based storage for fluxes. Produces smaller checkpoint files with openmp
Fixed baseCheck.f code from @mjberger that fixes errors observed in geoclaw/examples/tsunami/chile2010 where huge waves appeared at southern boundary around t = 4.5 hours
Merge branch 'rjl' into new_advanc_from_mjb

* rjl:
  Fixed baseCheck.f code from @mjberger that fixes errors observed in geoclaw/examples/tsunami/chile2010 where huge waves appeared at southern boundary around t = 4.5 hours
Merge remote-tracking branch 'upstream/master' into rjl

* upstream/master:
Merge pull request #40 from rjleveque/rjl

Fix to amrclaw that showed up in chile2010 test and improved advanc.f