Added the JavaFX code for the Carneades GUI.
Removed *.swp files
Removed another .swp file
Modified gui/argument.fx to cause all operations which change attributes of statements
and proof standards to cause the argument graph using them to be updated. This required some
methods to be moved from the Statement and ProofStandard classes to the ArgumentGraph class.
Modified gui/Commands.fx to use the revised gui/Argument.fx.   All updating of the ArgumentGraph model is now handled by the ArgumentGraph methods and need not be called explicit by other modules.
- gui: Migrated GUI to latest compiler and library version.
- gui: ant file refactored.
- gui: properly runs from .jar file now.
- gui: Library based file save bug fixed.
gui: added missing update calls in model functions
deleted obsolete files
gui: added jars to version control
Modified the update method of the ArgumentGraph class in gui/Argument.fx to make two passes. 
It is not clear why two passes are needed, but updating now seems to work. Return to this issue later. 

Fixed a bug in the hold? function of src/carneades/argument.ss.
Modified gui/Argument.fx to use triggers for updating an ArgumentGraph when attributes of statements, premises, proof standards or arguments are changed.
Moved some methods from the ArgumentGraph to the Argument class in gui/Argument.fx.  Added missing backwards references to Statements and ArgumentGraphs in Premises, Statements and Arugments.
gui: commands.fx updated
moved old sxml library to sxml-old and added a new sxml library
gui: Radiobuttons added
prelude.ss not longer used
added all sxml librarys from planet and started to port them to r6rs
revised ArgumentFile.fx and Commands.fx to initialize Statements, Arguments and ProofStandards to refer to the ArgumentGraph or Statement using them.