Changes to geoplot.py copied from clawpack-4.x
Merge github.com:clawpack/visclaw
Merge remote-tracking branch 'claworg/master'

* claworg/master:
  Avoid changing directories when reading output files (just use paths). Make gradient work with petclaw arrays. Use pcolormesh for schlieren plots (instead of pcolor).
Merge remote-tracking branch 'upstream/master' into rjl

* upstream/master:
  Look for io.petsc under petclaw, not pyclaw.
  If setplot.py is not found in current directory, use default_setplot.py.
  Changed Schlieren colormap to match what we use in old Clawpack MATLAB routines.
Merge remote-tracking branch 'upstream/master' into rjl

* upstream/master:
  Add MATLAB visualization source from Clawpack 4.x
  Move visclaw to python directory
  Strip path from setplot import statement
Merge remote-tracking branch 'upstream/master' into rjl

* upstream/master:
  Update visclaw to work with new Data and ClawData classes in clawutils.
  Fix old matlab contourc interface. Tested with shallow water on a sphere
Merged in changes to geoplot and plotpages from clawpack-4.x/python/pyclaw/plotters.

Changed link to topotools.  Changes to plotpages needed for plotfg.py
More fixes to make visclaw work with new ClawData object.
Fixed indentation typo
Added amr_ attributes to plot items and deleted a bunch of code for input parameters that is in clawutil/src/python/clawdata.py
Rename several variables.
Add map_2d_to_1d attribute to ClawPlotItem and replace
p_center->p_centers.
Fix missing attributes.
Fix compatibility with new clawdata.py
Commiting various changes before moving things out of the plotters subdir
Eliminated directory visclaw/src/python/visclaw/plotters and moved contents up a level.

Can now do 'from visclaw import Iplotclaw' for example
Merge pull request #4 from ketch/fix-data

More fixes to make visclaw work with new ClawData object.
Merge remote-tracking branch 'upstream/master' into moved-visclaw

* upstream/master:
  More fixes to make visclaw work with new ClawData object.
Merge branch 'master' of git://github.com/clawpack/visclaw into geometry

Conflicts:
	src/python/visclaw/plotters/data.py
Merge pull request #9 from mandli/geometry

VisClaw Geometry Changes