Merge pull request #49 from rjleveque/rjl

fixed allframesfile extraneous loop and clear otherfignames bugs
Correcting scan of frame number from filename
Removing unused variable pngfile
Merge remote-tracking branch 'upstream/master' into frame-plot-fix
Merge pull request #50 from gradylemoine/frame-plot-fix

Frame plot fix
Seems to work fine.
This fixes a host of bugs introduced by depending on AMRClaw.
Merge pull request #53 from ketch/fix-amrclaw-dependence-bug

This fixes a host of bugs introduced by depending on AMRClaw.