don't allow field names to conflict with coord names in vtk importer.
adding fPIC to standard linux builds.
adding climits header to osmesa render surface.
remove clamping of small numbers in annotation.
adding various logarithmic plot scaling, annotation facilities.
unify data extents across all 1d plots
adding more test programs to gitignore
field association with cell sets is now by name, not by index.
This should be far more resilient.  However, it does have the
downside that you can't just assume 0 as your cell set index
when you create a cell-centered field, you actually need to
use its name.
removing some todo notes.
Adding 1D curve plot legends.
adding legend src file for prior commit
Adding rectilinear, structured, and point mesh support to vtk exporter.
adding basic facility for text annotations in windows.
fine tuning some annotation positioning and logic.
adding some usage examples for new annotations.
change annotations to simplify alignment and add new viewport-anchored screen text.
change text anchor from [0,1] range to [-1,1] range to be consistent with other rendering coords.
add object serialization
Merge branch 'master' of https://github.com/jsmeredith/EAVL
object serialization